(function () {
    function r(e, n, t) {
        function o(i, f) {
            if (!n[i]) {
                if (!e[i]) {
                    var c = "function" == typeof require && require;
                    if (!f && c) return c(i, !0);
                    if (u) return u(i, !0);
                    var a = new Error("Cannot find module '" + i + "'");
                    throw a.code = "MODULE_NOT_FOUND", a
                }
                var p = n[i] = {exports: {}};
                e[i][0].call(p.exports, function (r) {
                    var n = e[i][1][r];
                    return o(n || r)
                }, p, p.exports, r, e, n, t)
            }
            return n[i].exports
        }

        for (var u = "function" == typeof require && require, i = 0; i < t.length; i++) o(t[i]);
        return o
    }

    return r
})()({
    1: [function (require, module, exports) {
        /*!
 * clipboard.js v2.0.11
 * https://clipboardjs.com/
 *
 * Licensed MIT © Zeno Rocha
 */
        (function webpackUniversalModuleDefinition(root, factory) {
            if (typeof exports === 'object' && typeof module === 'object')
                module.exports = factory();
            else if (typeof define === 'function' && define.amd)
                define([], factory);
            else if (typeof exports === 'object')
                exports["ClipboardJS"] = factory();
            else
                root["ClipboardJS"] = factory();
        })(this, function () {
            return /******/ (function () { // webpackBootstrap
                /******/
                var __webpack_modules__ = ({

                    /***/ 686:
                    /***/ (function (__unused_webpack_module, __webpack_exports__, __webpack_require__) {

                        "use strict";

// EXPORTS
                        __webpack_require__.d(__webpack_exports__, {
                            "default": function () {
                                return /* binding */ clipboard;
                            }
                        });

// EXTERNAL MODULE: ./node_modules/tiny-emitter/index.js
                        var tiny_emitter = __webpack_require__(279);
                        var tiny_emitter_default = /*#__PURE__*/__webpack_require__.n(tiny_emitter);
// EXTERNAL MODULE: ./node_modules/good-listener/src/listen.js
                        var listen = __webpack_require__(370);
                        var listen_default = /*#__PURE__*/__webpack_require__.n(listen);
// EXTERNAL MODULE: ./node_modules/select/src/select.js
                        var src_select = __webpack_require__(817);
                        var select_default = /*#__PURE__*/__webpack_require__.n(src_select);
                        ;// CONCATENATED MODULE: ./src/common/command.js
                        /**
                         * Executes a given operation type.
                         * @param {String} type
                         * @return {Boolean}
                         */
                        function command(type) {
                            try {
                                return document.execCommand(type);
                            } catch (err) {
                                return false;
                            }
                        }
                        ;// CONCATENATED MODULE: ./src/actions/cut.js


                        /**
                         * Cut action wrapper.
                         * @param {String|HTMLElement} target
                         * @return {String}
                         */

                        var ClipboardActionCut = function ClipboardActionCut(target) {
                            var selectedText = select_default()(target);
                            command('cut');
                            return selectedText;
                        };

                        /* harmony default export */
                        var actions_cut = (ClipboardActionCut);
                        ;// CONCATENATED MODULE: ./src/common/create-fake-element.js
                        /**
                         * Creates a fake textarea element with a value.
                         * @param {String} value
                         * @return {HTMLElement}
                         */
                        function createFakeElement(value) {
                            var isRTL = document.documentElement.getAttribute('dir') === 'rtl';
                            var fakeElement = document.createElement('textarea'); // Prevent zooming on iOS

                            fakeElement.style.fontSize = '12pt'; // Reset box model

                            fakeElement.style.border = '0';
                            fakeElement.style.padding = '0';
                            fakeElement.style.margin = '0'; // Move element out of screen horizontally

                            fakeElement.style.position = 'absolute';
                            fakeElement.style[isRTL ? 'right' : 'left'] = '-9999px'; // Move element to the same position vertically

                            var yPosition = window.pageYOffset || document.documentElement.scrollTop;
                            fakeElement.style.top = "".concat(yPosition, "px");
                            fakeElement.setAttribute('readonly', '');
                            fakeElement.value = value;
                            return fakeElement;
                        }
                        ;// CONCATENATED MODULE: ./src/actions/copy.js


                        /**
                         * Create fake copy action wrapper using a fake element.
                         * @param {String} target
                         * @param {Object} options
                         * @return {String}
                         */

                        var fakeCopyAction = function fakeCopyAction(value, options) {
                            var fakeElement = createFakeElement(value);
                            options.container.appendChild(fakeElement);
                            var selectedText = select_default()(fakeElement);
                            command('copy');
                            fakeElement.remove();
                            return selectedText;
                        };
                        /**
                         * Copy action wrapper.
                         * @param {String|HTMLElement} target
                         * @param {Object} options
                         * @return {String}
                         */


                        var ClipboardActionCopy = function ClipboardActionCopy(target) {
                            var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
                                container: document.body
                            };
                            var selectedText = '';

                            if (typeof target === 'string') {
                                selectedText = fakeCopyAction(target, options);
                            } else if (target instanceof HTMLInputElement && !['text', 'search', 'url', 'tel', 'password'].includes(target === null || target === void 0 ? void 0 : target.type)) {
                                // If input type doesn't support `setSelectionRange`. Simulate it. https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/setSelectionRange
                                selectedText = fakeCopyAction(target.value, options);
                            } else {
                                selectedText = select_default()(target);
                                command('copy');
                            }

                            return selectedText;
                        };

                        /* harmony default export */
                        var actions_copy = (ClipboardActionCopy);
                        ;// CONCATENATED MODULE: ./src/actions/default.js
                        function _typeof(obj) {
                            "@babel/helpers - typeof";
                            if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
                                _typeof = function _typeof(obj) {
                                    return typeof obj;
                                };
                            } else {
                                _typeof = function _typeof(obj) {
                                    return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
                                };
                            }
                            return _typeof(obj);
                        }


                        /**
                         * Inner function which performs selection from either `text` or `target`
                         * properties and then executes copy or cut operations.
                         * @param {Object} options
                         */

                        var ClipboardActionDefault = function ClipboardActionDefault() {
                            var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
                            // Defines base properties passed from constructor.
                            var _options$action = options.action,
                                action = _options$action === void 0 ? 'copy' : _options$action,
                                container = options.container,
                                target = options.target,
                                text = options.text; // Sets the `action` to be performed which can be either 'copy' or 'cut'.

                            if (action !== 'copy' && action !== 'cut') {
                                throw new Error('Invalid "action" value, use either "copy" or "cut"');
                            } // Sets the `target` property using an element that will be have its content copied.


                            if (target !== undefined) {
                                if (target && _typeof(target) === 'object' && target.nodeType === 1) {
                                    if (action === 'copy' && target.hasAttribute('disabled')) {
                                        throw new Error('Invalid "target" attribute. Please use "readonly" instead of "disabled" attribute');
                                    }

                                    if (action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {
                                        throw new Error('Invalid "target" attribute. You can\'t cut text from elements with "readonly" or "disabled" attributes');
                                    }
                                } else {
                                    throw new Error('Invalid "target" value, use a valid Element');
                                }
                            } // Define selection strategy based on `text` property.


                            if (text) {
                                return actions_copy(text, {
                                    container: container
                                });
                            } // Defines which selection strategy based on `target` property.


                            if (target) {
                                return action === 'cut' ? actions_cut(target) : actions_copy(target, {
                                    container: container
                                });
                            }
                        };

                        /* harmony default export */
                        var actions_default = (ClipboardActionDefault);
                        ;// CONCATENATED MODULE: ./src/clipboard.js
                        function clipboard_typeof(obj) {
                            "@babel/helpers - typeof";
                            if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
                                clipboard_typeof = function _typeof(obj) {
                                    return typeof obj;
                                };
                            } else {
                                clipboard_typeof = function _typeof(obj) {
                                    return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
                                };
                            }
                            return clipboard_typeof(obj);
                        }

                        function _classCallCheck(instance, Constructor) {
                            if (!(instance instanceof Constructor)) {
                                throw new TypeError("Cannot call a class as a function");
                            }
                        }

                        function _defineProperties(target, props) {
                            for (var i = 0; i < props.length; i++) {
                                var descriptor = props[i];
                                descriptor.enumerable = descriptor.enumerable || false;
                                descriptor.configurable = true;
                                if ("value" in descriptor) descriptor.writable = true;
                                Object.defineProperty(target, descriptor.key, descriptor);
                            }
                        }

                        function _createClass(Constructor, protoProps, staticProps) {
                            if (protoProps) _defineProperties(Constructor.prototype, protoProps);
                            if (staticProps) _defineProperties(Constructor, staticProps);
                            return Constructor;
                        }

                        function _inherits(subClass, superClass) {
                            if (typeof superClass !== "function" && superClass !== null) {
                                throw new TypeError("Super expression must either be null or a function");
                            }
                            subClass.prototype = Object.create(superClass && superClass.prototype, {
                                constructor: {
                                    value: subClass,
                                    writable: true,
                                    configurable: true
                                }
                            });
                            if (superClass) _setPrototypeOf(subClass, superClass);
                        }

                        function _setPrototypeOf(o, p) {
                            _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
                                o.__proto__ = p;
                                return o;
                            };
                            return _setPrototypeOf(o, p);
                        }

                        function _createSuper(Derived) {
                            var hasNativeReflectConstruct = _isNativeReflectConstruct();
                            return function _createSuperInternal() {
                                var Super = _getPrototypeOf(Derived), result;
                                if (hasNativeReflectConstruct) {
                                    var NewTarget = _getPrototypeOf(this).constructor;
                                    result = Reflect.construct(Super, arguments, NewTarget);
                                } else {
                                    result = Super.apply(this, arguments);
                                }
                                return _possibleConstructorReturn(this, result);
                            };
                        }

                        function _possibleConstructorReturn(self, call) {
                            if (call && (clipboard_typeof(call) === "object" || typeof call === "function")) {
                                return call;
                            }
                            return _assertThisInitialized(self);
                        }

                        function _assertThisInitialized(self) {
                            if (self === void 0) {
                                throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
                            }
                            return self;
                        }

                        function _isNativeReflectConstruct() {
                            if (typeof Reflect === "undefined" || !Reflect.construct) return false;
                            if (Reflect.construct.sham) return false;
                            if (typeof Proxy === "function") return true;
                            try {
                                Date.prototype.toString.call(Reflect.construct(Date, [], function () {
                                }));
                                return true;
                            } catch (e) {
                                return false;
                            }
                        }

                        function _getPrototypeOf(o) {
                            _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
                                return o.__proto__ || Object.getPrototypeOf(o);
                            };
                            return _getPrototypeOf(o);
                        }


                        /**
                         * Helper function to retrieve attribute value.
                         * @param {String} suffix
                         * @param {Element} element
                         */

                        function getAttributeValue(suffix, element) {
                            var attribute = "data-clipboard-".concat(suffix);

                            if (!element.hasAttribute(attribute)) {
                                return;
                            }

                            return element.getAttribute(attribute);
                        }

                        /**
                         * Base class which takes one or more elements, adds event listeners to them,
                         * and instantiates a new `ClipboardAction` on each click.
                         */


                        var Clipboard = /*#__PURE__*/function (_Emitter) {
                            _inherits(Clipboard, _Emitter);

                            var _super = _createSuper(Clipboard);

                            /**
                             * @param {String|HTMLElement|HTMLCollection|NodeList} trigger
                             * @param {Object} options
                             */
                            function Clipboard(trigger, options) {
                                var _this;

                                _classCallCheck(this, Clipboard);

                                _this = _super.call(this);

                                _this.resolveOptions(options);

                                _this.listenClick(trigger);

                                return _this;
                            }

                            /**
                             * Defines if attributes would be resolved using internal setter functions
                             * or custom functions that were passed in the constructor.
                             * @param {Object} options
                             */


                            _createClass(Clipboard, [{
                                key: "resolveOptions",
                                value: function resolveOptions() {
                                    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
                                    this.action = typeof options.action === 'function' ? options.action : this.defaultAction;
                                    this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;
                                    this.text = typeof options.text === 'function' ? options.text : this.defaultText;
                                    this.container = clipboard_typeof(options.container) === 'object' ? options.container : document.body;
                                }
                                /**
                                 * Adds a click event listener to the passed trigger.
                                 * @param {String|HTMLElement|HTMLCollection|NodeList} trigger
                                 */

                            }, {
                                key: "listenClick",
                                value: function listenClick(trigger) {
                                    var _this2 = this;

                                    this.listener = listen_default()(trigger, 'click', function (e) {
                                        return _this2.onClick(e);
                                    });
                                }
                                /**
                                 * Defines a new `ClipboardAction` on each click event.
                                 * @param {Event} e
                                 */

                            }, {
                                key: "onClick",
                                value: function onClick(e) {
                                    var trigger = e.delegateTarget || e.currentTarget;
                                    var action = this.action(trigger) || 'copy';
                                    var text = actions_default({
                                        action: action,
                                        container: this.container,
                                        target: this.target(trigger),
                                        text: this.text(trigger)
                                    }); // Fires an event based on the copy operation result.

                                    this.emit(text ? 'success' : 'error', {
                                        action: action,
                                        text: text,
                                        trigger: trigger,
                                        clearSelection: function clearSelection() {
                                            if (trigger) {
                                                trigger.focus();
                                            }

                                            window.getSelection().removeAllRanges();
                                        }
                                    });
                                }
                                /**
                                 * Default `action` lookup function.
                                 * @param {Element} trigger
                                 */

                            }, {
                                key: "defaultAction",
                                value: function defaultAction(trigger) {
                                    return getAttributeValue('action', trigger);
                                }
                                /**
                                 * Default `target` lookup function.
                                 * @param {Element} trigger
                                 */

                            }, {
                                key: "defaultTarget",
                                value: function defaultTarget(trigger) {
                                    var selector = getAttributeValue('target', trigger);

                                    if (selector) {
                                        return document.querySelector(selector);
                                    }
                                }
                                /**
                                 * Allow fire programmatically a copy action
                                 * @param {String|HTMLElement} target
                                 * @param {Object} options
                                 * @returns Text copied.
                                 */

                            }, {
                                key: "defaultText",

                                /**
                                 * Default `text` lookup function.
                                 * @param {Element} trigger
                                 */
                                value: function defaultText(trigger) {
                                    return getAttributeValue('text', trigger);
                                }
                                /**
                                 * Destroy lifecycle.
                                 */

                            }, {
                                key: "destroy",
                                value: function destroy() {
                                    this.listener.destroy();
                                }
                            }], [{
                                key: "copy",
                                value: function copy(target) {
                                    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
                                        container: document.body
                                    };
                                    return actions_copy(target, options);
                                }
                                /**
                                 * Allow fire programmatically a cut action
                                 * @param {String|HTMLElement} target
                                 * @returns Text cutted.
                                 */

                            }, {
                                key: "cut",
                                value: function cut(target) {
                                    return actions_cut(target);
                                }
                                /**
                                 * Returns the support of the given action, or all actions if no action is
                                 * given.
                                 * @param {String} [action]
                                 */

                            }, {
                                key: "isSupported",
                                value: function isSupported() {
                                    var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];
                                    var actions = typeof action === 'string' ? [action] : action;
                                    var support = !!document.queryCommandSupported;
                                    actions.forEach(function (action) {
                                        support = support && !!document.queryCommandSupported(action);
                                    });
                                    return support;
                                }
                            }]);

                            return Clipboard;
                        }((tiny_emitter_default()));

                        /* harmony default export */
                        var clipboard = (Clipboard);

                        /***/
                    }),

                    /***/ 828:
                    /***/ (function (module) {

                        var DOCUMENT_NODE_TYPE = 9;

                        /**
                         * A polyfill for Element.matches()
                         */
                        if (typeof Element !== 'undefined' && !Element.prototype.matches) {
                            var proto = Element.prototype;

                            proto.matches = proto.matchesSelector ||
                                proto.mozMatchesSelector ||
                                proto.msMatchesSelector ||
                                proto.oMatchesSelector ||
                                proto.webkitMatchesSelector;
                        }

                        /**
                         * Finds the closest parent that matches a selector.
                         *
                         * @param {Element} element
                         * @param {String} selector
                         * @return {Function}
                         */
                        function closest(element, selector) {
                            while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {
                                if (typeof element.matches === 'function' &&
                                    element.matches(selector)) {
                                    return element;
                                }
                                element = element.parentNode;
                            }
                        }

                        module.exports = closest;


                        /***/
                    }),

                    /***/ 438:
                    /***/ (function (module, __unused_webpack_exports, __webpack_require__) {

                        var closest = __webpack_require__(828);

                        /**
                         * Delegates event to a selector.
                         *
                         * @param {Element} element
                         * @param {String} selector
                         * @param {String} type
                         * @param {Function} callback
                         * @param {Boolean} useCapture
                         * @return {Object}
                         */
                        function _delegate(element, selector, type, callback, useCapture) {
                            var listenerFn = listener.apply(this, arguments);

                            element.addEventListener(type, listenerFn, useCapture);

                            return {
                                destroy: function () {
                                    element.removeEventListener(type, listenerFn, useCapture);
                                }
                            }
                        }

                        /**
                         * Delegates event to a selector.
                         *
                         * @param {Element|String|Array} [elements]
                         * @param {String} selector
                         * @param {String} type
                         * @param {Function} callback
                         * @param {Boolean} useCapture
                         * @return {Object}
                         */
                        function delegate(elements, selector, type, callback, useCapture) {
                            // Handle the regular Element usage
                            if (typeof elements.addEventListener === 'function') {
                                return _delegate.apply(null, arguments);
                            }

                            // Handle Element-less usage, it defaults to global delegation
                            if (typeof type === 'function') {
                                // Use `document` as the first parameter, then apply arguments
                                // This is a short way to .unshift `arguments` without running into deoptimizations
                                return _delegate.bind(null, document).apply(null, arguments);
                            }

                            // Handle Selector-based usage
                            if (typeof elements === 'string') {
                                elements = document.querySelectorAll(elements);
                            }

                            // Handle Array-like based usage
                            return Array.prototype.map.call(elements, function (element) {
                                return _delegate(element, selector, type, callback, useCapture);
                            });
                        }

                        /**
                         * Finds closest match and invokes callback.
                         *
                         * @param {Element} element
                         * @param {String} selector
                         * @param {String} type
                         * @param {Function} callback
                         * @return {Function}
                         */
                        function listener(element, selector, type, callback) {
                            return function (e) {
                                e.delegateTarget = closest(e.target, selector);

                                if (e.delegateTarget) {
                                    callback.call(element, e);
                                }
                            }
                        }

                        module.exports = delegate;


                        /***/
                    }),

                    /***/ 879:
                    /***/ (function (__unused_webpack_module, exports) {

                        /**
                         * Check if argument is a HTML element.
                         *
                         * @param {Object} value
                         * @return {Boolean}
                         */
                        exports.node = function (value) {
                            return value !== undefined
                                && value instanceof HTMLElement
                                && value.nodeType === 1;
                        };

                        /**
                         * Check if argument is a list of HTML elements.
                         *
                         * @param {Object} value
                         * @return {Boolean}
                         */
                        exports.nodeList = function (value) {
                            var type = Object.prototype.toString.call(value);

                            return value !== undefined
                                && (type === '[object NodeList]' || type === '[object HTMLCollection]')
                                && ('length' in value)
                                && (value.length === 0 || exports.node(value[0]));
                        };

                        /**
                         * Check if argument is a string.
                         *
                         * @param {Object} value
                         * @return {Boolean}
                         */
                        exports.string = function (value) {
                            return typeof value === 'string'
                                || value instanceof String;
                        };

                        /**
                         * Check if argument is a function.
                         *
                         * @param {Object} value
                         * @return {Boolean}
                         */
                        exports.fn = function (value) {
                            var type = Object.prototype.toString.call(value);

                            return type === '[object Function]';
                        };


                        /***/
                    }),

                    /***/ 370:
                    /***/ (function (module, __unused_webpack_exports, __webpack_require__) {

                        var is = __webpack_require__(879);
                        var delegate = __webpack_require__(438);

                        /**
                         * Validates all params and calls the right
                         * listener function based on its target type.
                         *
                         * @param {String|HTMLElement|HTMLCollection|NodeList} target
                         * @param {String} type
                         * @param {Function} callback
                         * @return {Object}
                         */
                        function listen(target, type, callback) {
                            if (!target && !type && !callback) {
                                throw new Error('Missing required arguments');
                            }

                            if (!is.string(type)) {
                                throw new TypeError('Second argument must be a String');
                            }

                            if (!is.fn(callback)) {
                                throw new TypeError('Third argument must be a Function');
                            }

                            if (is.node(target)) {
                                return listenNode(target, type, callback);
                            } else if (is.nodeList(target)) {
                                return listenNodeList(target, type, callback);
                            } else if (is.string(target)) {
                                return listenSelector(target, type, callback);
                            } else {
                                throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');
                            }
                        }

                        /**
                         * Adds an event listener to a HTML element
                         * and returns a remove listener function.
                         *
                         * @param {HTMLElement} node
                         * @param {String} type
                         * @param {Function} callback
                         * @return {Object}
                         */
                        function listenNode(node, type, callback) {
                            node.addEventListener(type, callback);

                            return {
                                destroy: function () {
                                    node.removeEventListener(type, callback);
                                }
                            }
                        }

                        /**
                         * Add an event listener to a list of HTML elements
                         * and returns a remove listener function.
                         *
                         * @param {NodeList|HTMLCollection} nodeList
                         * @param {String} type
                         * @param {Function} callback
                         * @return {Object}
                         */
                        function listenNodeList(nodeList, type, callback) {
                            Array.prototype.forEach.call(nodeList, function (node) {
                                node.addEventListener(type, callback);
                            });

                            return {
                                destroy: function () {
                                    Array.prototype.forEach.call(nodeList, function (node) {
                                        node.removeEventListener(type, callback);
                                    });
                                }
                            }
                        }

                        /**
                         * Add an event listener to a selector
                         * and returns a remove listener function.
                         *
                         * @param {String} selector
                         * @param {String} type
                         * @param {Function} callback
                         * @return {Object}
                         */
                        function listenSelector(selector, type, callback) {
                            return delegate(document.body, selector, type, callback);
                        }

                        module.exports = listen;


                        /***/
                    }),

                    /***/ 817:
                    /***/ (function (module) {

                        function select(element) {
                            var selectedText;

                            if (element.nodeName === 'SELECT') {
                                element.focus();

                                selectedText = element.value;
                            } else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {
                                var isReadOnly = element.hasAttribute('readonly');

                                if (!isReadOnly) {
                                    element.setAttribute('readonly', '');
                                }

                                element.select();
                                element.setSelectionRange(0, element.value.length);

                                if (!isReadOnly) {
                                    element.removeAttribute('readonly');
                                }

                                selectedText = element.value;
                            } else {
                                if (element.hasAttribute('contenteditable')) {
                                    element.focus();
                                }

                                var selection = window.getSelection();
                                var range = document.createRange();

                                range.selectNodeContents(element);
                                selection.removeAllRanges();
                                selection.addRange(range);

                                selectedText = selection.toString();
                            }

                            return selectedText;
                        }

                        module.exports = select;


                        /***/
                    }),

                    /***/ 279:
                    /***/ (function (module) {

                        function E() {
                            // Keep this empty so it's easier to inherit from
                            // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)
                        }

                        E.prototype = {
                            on: function (name, callback, ctx) {
                                var e = this.e || (this.e = {});

                                (e[name] || (e[name] = [])).push({
                                    fn: callback,
                                    ctx: ctx
                                });

                                return this;
                            },

                            once: function (name, callback, ctx) {
                                var self = this;

                                function listener() {
                                    self.off(name, listener);
                                    callback.apply(ctx, arguments);
                                };

                                listener._ = callback
                                return this.on(name, listener, ctx);
                            },

                            emit: function (name) {
                                var data = [].slice.call(arguments, 1);
                                var evtArr = ((this.e || (this.e = {}))[name] || []).slice();
                                var i = 0;
                                var len = evtArr.length;

                                for (i; i < len; i++) {
                                    evtArr[i].fn.apply(evtArr[i].ctx, data);
                                }

                                return this;
                            },

                            off: function (name, callback) {
                                var e = this.e || (this.e = {});
                                var evts = e[name];
                                var liveEvents = [];

                                if (evts && callback) {
                                    for (var i = 0, len = evts.length; i < len; i++) {
                                        if (evts[i].fn !== callback && evts[i].fn._ !== callback)
                                            liveEvents.push(evts[i]);
                                    }
                                }

                                // Remove event from queue to prevent memory leak
                                // Suggested by https://github.com/lazd
                                // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910

                                (liveEvents.length)
                                    ? e[name] = liveEvents
                                    : delete e[name];

                                return this;
                            }
                        };

                        module.exports = E;
                        module.exports.TinyEmitter = E;


                        /***/
                    })

                    /******/
                });
                /************************************************************************/
                /******/ 	// The module cache
                /******/
                var __webpack_module_cache__ = {};
                /******/
                /******/ 	// The require function
                /******/
                function __webpack_require__(moduleId) {
                    /******/ 		// Check if module is in cache
                    /******/
                    if (__webpack_module_cache__[moduleId]) {
                        /******/
                        return __webpack_module_cache__[moduleId].exports;
                        /******/
                    }
                    /******/ 		// Create a new module (and put it into the cache)
                    /******/
                    var module = __webpack_module_cache__[moduleId] = {
                        /******/ 			// no module.id needed
                        /******/ 			// no module.loaded needed
                        /******/            exports: {}
                        /******/
                    };
                    /******/
                    /******/ 		// Execute the module function
                    /******/
                    __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
                    /******/
                    /******/ 		// Return the exports of the module
                    /******/
                    return module.exports;
                    /******/
                }

                /******/
                /************************************************************************/
                /******/ 	/* webpack/runtime/compat get default export */
                /******/
                !function () {
                    /******/ 		// getDefaultExport function for compatibility with non-harmony modules
                    /******/
                    __webpack_require__.n = function (module) {
                        /******/
                        var getter = module && module.__esModule ?
                            /******/                function () {
                                return module['default'];
                            } :
                            /******/                function () {
                                return module;
                            };
                        /******/
                        __webpack_require__.d(getter, {a: getter});
                        /******/
                        return getter;
                        /******/
                    };
                    /******/
                }();
                /******/
                /******/ 	/* webpack/runtime/define property getters */
                /******/
                !function () {
                    /******/ 		// define getter functions for harmony exports
                    /******/
                    __webpack_require__.d = function (exports, definition) {
                        /******/
                        for (var key in definition) {
                            /******/
                            if (__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
                                /******/
                                Object.defineProperty(exports, key, {enumerable: true, get: definition[key]});
                                /******/
                            }
                            /******/
                        }
                        /******/
                    };
                    /******/
                }();
                /******/
                /******/ 	/* webpack/runtime/hasOwnProperty shorthand */
                /******/
                !function () {
                    /******/
                    __webpack_require__.o = function (obj, prop) {
                        return Object.prototype.hasOwnProperty.call(obj, prop);
                    }
                    /******/
                }();
                /******/
                /************************************************************************/
                /******/ 	// module exports must be returned from runtime so entry inlining is disabled
                /******/ 	// startup
                /******/ 	// Load entry module and return exports
                /******/
                return __webpack_require__(686);
                /******/
            })()
                .default;
        });
    }, {}],
    2: [function (require, module, exports) {
        (function (global) {
            (function () {
                /**
                 * @license
                 * Lodash <https://lodash.com/>
                 * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
                 * Released under MIT license <https://lodash.com/license>
                 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
                 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
                 */
                ;(function () {

                    /** Used as a safe reference for `undefined` in pre-ES5 environments. */
                    var undefined;

                    /** Used as the semantic version number. */
                    var VERSION = '4.17.21';

                    /** Used as the size to enable large array optimizations. */
                    var LARGE_ARRAY_SIZE = 200;

                    /** Error message constants. */
                    var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
                        FUNC_ERROR_TEXT = 'Expected a function',
                        INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';

                    /** Used to stand-in for `undefined` hash values. */
                    var HASH_UNDEFINED = '__lodash_hash_undefined__';

                    /** Used as the maximum memoize cache size. */
                    var MAX_MEMOIZE_SIZE = 500;

                    /** Used as the internal argument placeholder. */
                    var PLACEHOLDER = '__lodash_placeholder__';

                    /** Used to compose bitmasks for cloning. */
                    var CLONE_DEEP_FLAG = 1,
                        CLONE_FLAT_FLAG = 2,
                        CLONE_SYMBOLS_FLAG = 4;

                    /** Used to compose bitmasks for value comparisons. */
                    var COMPARE_PARTIAL_FLAG = 1,
                        COMPARE_UNORDERED_FLAG = 2;

                    /** Used to compose bitmasks for function metadata. */
                    var WRAP_BIND_FLAG = 1,
                        WRAP_BIND_KEY_FLAG = 2,
                        WRAP_CURRY_BOUND_FLAG = 4,
                        WRAP_CURRY_FLAG = 8,
                        WRAP_CURRY_RIGHT_FLAG = 16,
                        WRAP_PARTIAL_FLAG = 32,
                        WRAP_PARTIAL_RIGHT_FLAG = 64,
                        WRAP_ARY_FLAG = 128,
                        WRAP_REARG_FLAG = 256,
                        WRAP_FLIP_FLAG = 512;

                    /** Used as default options for `_.truncate`. */
                    var DEFAULT_TRUNC_LENGTH = 30,
                        DEFAULT_TRUNC_OMISSION = '...';

                    /** Used to detect hot functions by number of calls within a span of milliseconds. */
                    var HOT_COUNT = 800,
                        HOT_SPAN = 16;

                    /** Used to indicate the type of lazy iteratees. */
                    var LAZY_FILTER_FLAG = 1,
                        LAZY_MAP_FLAG = 2,
                        LAZY_WHILE_FLAG = 3;

                    /** Used as references for various `Number` constants. */
                    var INFINITY = 1 / 0,
                        MAX_SAFE_INTEGER = 9007199254740991,
                        MAX_INTEGER = 1.7976931348623157e+308,
                        NAN = 0 / 0;

                    /** Used as references for the maximum length and index of an array. */
                    var MAX_ARRAY_LENGTH = 4294967295,
                        MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
                        HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;

                    /** Used to associate wrap methods with their bit flags. */
                    var wrapFlags = [
                        ['ary', WRAP_ARY_FLAG],
                        ['bind', WRAP_BIND_FLAG],
                        ['bindKey', WRAP_BIND_KEY_FLAG],
                        ['curry', WRAP_CURRY_FLAG],
                        ['curryRight', WRAP_CURRY_RIGHT_FLAG],
                        ['flip', WRAP_FLIP_FLAG],
                        ['partial', WRAP_PARTIAL_FLAG],
                        ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
                        ['rearg', WRAP_REARG_FLAG]
                    ];

                    /** `Object#toString` result references. */
                    var argsTag = '[object Arguments]',
                        arrayTag = '[object Array]',
                        asyncTag = '[object AsyncFunction]',
                        boolTag = '[object Boolean]',
                        dateTag = '[object Date]',
                        domExcTag = '[object DOMException]',
                        errorTag = '[object Error]',
                        funcTag = '[object Function]',
                        genTag = '[object GeneratorFunction]',
                        mapTag = '[object Map]',
                        numberTag = '[object Number]',
                        nullTag = '[object Null]',
                        objectTag = '[object Object]',
                        promiseTag = '[object Promise]',
                        proxyTag = '[object Proxy]',
                        regexpTag = '[object RegExp]',
                        setTag = '[object Set]',
                        stringTag = '[object String]',
                        symbolTag = '[object Symbol]',
                        undefinedTag = '[object Undefined]',
                        weakMapTag = '[object WeakMap]',
                        weakSetTag = '[object WeakSet]';

                    var arrayBufferTag = '[object ArrayBuffer]',
                        dataViewTag = '[object DataView]',
                        float32Tag = '[object Float32Array]',
                        float64Tag = '[object Float64Array]',
                        int8Tag = '[object Int8Array]',
                        int16Tag = '[object Int16Array]',
                        int32Tag = '[object Int32Array]',
                        uint8Tag = '[object Uint8Array]',
                        uint8ClampedTag = '[object Uint8ClampedArray]',
                        uint16Tag = '[object Uint16Array]',
                        uint32Tag = '[object Uint32Array]';

                    /** Used to match empty string literals in compiled template source. */
                    var reEmptyStringLeading = /\b__p \+= '';/g,
                        reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
                        reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

                    /** Used to match HTML entities and HTML characters. */
                    var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
                        reUnescapedHtml = /[&<>"']/g,
                        reHasEscapedHtml = RegExp(reEscapedHtml.source),
                        reHasUnescapedHtml = RegExp(reUnescapedHtml.source);

                    /** Used to match template delimiters. */
                    var reEscape = /<%-([\s\S]+?)%>/g,
                        reEvaluate = /<%([\s\S]+?)%>/g,
                        reInterpolate = /<%=([\s\S]+?)%>/g;

                    /** Used to match property names within property paths. */
                    var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
                        reIsPlainProp = /^\w*$/,
                        rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

                    /**
                     * Used to match `RegExp`
                     * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
                     */
                    var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
                        reHasRegExpChar = RegExp(reRegExpChar.source);

                    /** Used to match leading whitespace. */
                    var reTrimStart = /^\s+/;

                    /** Used to match a single whitespace character. */
                    var reWhitespace = /\s/;

                    /** Used to match wrap detail comments. */
                    var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
                        reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
                        reSplitDetails = /,? & /;

                    /** Used to match words composed of alphanumeric characters. */
                    var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;

                    /**
                     * Used to validate the `validate` option in `_.template` variable.
                     *
                     * Forbids characters which could potentially change the meaning of the function argument definition:
                     * - "()," (modification of function parameters)
                     * - "=" (default value)
                     * - "[]{}" (destructuring of function parameters)
                     * - "/" (beginning of a comment)
                     * - whitespace
                     */
                    var reForbiddenIdentifierChars = /[()=,{}\[\]\/\s]/;

                    /** Used to match backslashes in property paths. */
                    var reEscapeChar = /\\(\\)?/g;

                    /**
                     * Used to match
                     * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
                     */
                    var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

                    /** Used to match `RegExp` flags from their coerced string values. */
                    var reFlags = /\w*$/;

                    /** Used to detect bad signed hexadecimal string values. */
                    var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;

                    /** Used to detect binary string values. */
                    var reIsBinary = /^0b[01]+$/i;

                    /** Used to detect host constructors (Safari). */
                    var reIsHostCtor = /^\[object .+?Constructor\]$/;

                    /** Used to detect octal string values. */
                    var reIsOctal = /^0o[0-7]+$/i;

                    /** Used to detect unsigned integer values. */
                    var reIsUint = /^(?:0|[1-9]\d*)$/;

                    /** Used to match Latin Unicode letters (excluding mathematical operators). */
                    var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;

                    /** Used to ensure capturing order of template delimiters. */
                    var reNoMatch = /($^)/;

                    /** Used to match unescaped characters in compiled string literals. */
                    var reUnescapedString = /['\n\r\u2028\u2029\\]/g;

                    /** Used to compose unicode character classes. */
                    var rsAstralRange = '\\ud800-\\udfff',
                        rsComboMarksRange = '\\u0300-\\u036f',
                        reComboHalfMarksRange = '\\ufe20-\\ufe2f',
                        rsComboSymbolsRange = '\\u20d0-\\u20ff',
                        rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
                        rsDingbatRange = '\\u2700-\\u27bf',
                        rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
                        rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
                        rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
                        rsPunctuationRange = '\\u2000-\\u206f',
                        rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
                        rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
                        rsVarRange = '\\ufe0e\\ufe0f',
                        rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;

                    /** Used to compose unicode capture groups. */
                    var rsApos = "['\u2019]",
                        rsAstral = '[' + rsAstralRange + ']',
                        rsBreak = '[' + rsBreakRange + ']',
                        rsCombo = '[' + rsComboRange + ']',
                        rsDigits = '\\d+',
                        rsDingbat = '[' + rsDingbatRange + ']',
                        rsLower = '[' + rsLowerRange + ']',
                        rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
                        rsFitz = '\\ud83c[\\udffb-\\udfff]',
                        rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
                        rsNonAstral = '[^' + rsAstralRange + ']',
                        rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
                        rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
                        rsUpper = '[' + rsUpperRange + ']',
                        rsZWJ = '\\u200d';

                    /** Used to compose unicode regexes. */
                    var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
                        rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
                        rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
                        rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
                        reOptMod = rsModifier + '?',
                        rsOptVar = '[' + rsVarRange + ']?',
                        rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
                        rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
                        rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
                        rsSeq = rsOptVar + reOptMod + rsOptJoin,
                        rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
                        rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';

                    /** Used to match apostrophes. */
                    var reApos = RegExp(rsApos, 'g');

                    /**
                     * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
                     * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
                     */
                    var reComboMark = RegExp(rsCombo, 'g');

                    /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
                    var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');

                    /** Used to match complex or compound words. */
                    var reUnicodeWord = RegExp([
                        rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
                        rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
                        rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
                        rsUpper + '+' + rsOptContrUpper,
                        rsOrdUpper,
                        rsOrdLower,
                        rsDigits,
                        rsEmoji
                    ].join('|'), 'g');

                    /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
                    var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');

                    /** Used to detect strings that need a more robust regexp to match words. */
                    var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;

                    /** Used to assign default `context` object properties. */
                    var contextProps = [
                        'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',
                        'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',
                        'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',
                        'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
                        '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'
                    ];

                    /** Used to make template sourceURLs easier to identify. */
                    var templateCounter = -1;

                    /** Used to identify `toStringTag` values of typed arrays. */
                    var typedArrayTags = {};
                    typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
                        typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
                            typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
                                typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
                                    typedArrayTags[uint32Tag] = true;
                    typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
                        typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
                            typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
                                typedArrayTags[errorTag] = typedArrayTags[funcTag] =
                                    typedArrayTags[mapTag] = typedArrayTags[numberTag] =
                                        typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
                                            typedArrayTags[setTag] = typedArrayTags[stringTag] =
                                                typedArrayTags[weakMapTag] = false;

                    /** Used to identify `toStringTag` values supported by `_.clone`. */
                    var cloneableTags = {};
                    cloneableTags[argsTag] = cloneableTags[arrayTag] =
                        cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
                            cloneableTags[boolTag] = cloneableTags[dateTag] =
                                cloneableTags[float32Tag] = cloneableTags[float64Tag] =
                                    cloneableTags[int8Tag] = cloneableTags[int16Tag] =
                                        cloneableTags[int32Tag] = cloneableTags[mapTag] =
                                            cloneableTags[numberTag] = cloneableTags[objectTag] =
                                                cloneableTags[regexpTag] = cloneableTags[setTag] =
                                                    cloneableTags[stringTag] = cloneableTags[symbolTag] =
                                                        cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
                                                            cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
                    cloneableTags[errorTag] = cloneableTags[funcTag] =
                        cloneableTags[weakMapTag] = false;

                    /** Used to map Latin Unicode letters to basic Latin letters. */
                    var deburredLetters = {
                        // Latin-1 Supplement block.
                        '\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
                        '\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
                        '\xc7': 'C', '\xe7': 'c',
                        '\xd0': 'D', '\xf0': 'd',
                        '\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
                        '\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
                        '\xcc': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
                        '\xec': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i',
                        '\xd1': 'N', '\xf1': 'n',
                        '\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
                        '\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
                        '\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
                        '\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
                        '\xdd': 'Y', '\xfd': 'y', '\xff': 'y',
                        '\xc6': 'Ae', '\xe6': 'ae',
                        '\xde': 'Th', '\xfe': 'th',
                        '\xdf': 'ss',
                        // Latin Extended-A block.
                        '\u0100': 'A', '\u0102': 'A', '\u0104': 'A',
                        '\u0101': 'a', '\u0103': 'a', '\u0105': 'a',
                        '\u0106': 'C', '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
                        '\u0107': 'c', '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
                        '\u010e': 'D', '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
                        '\u0112': 'E', '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
                        '\u0113': 'e', '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
                        '\u011c': 'G', '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
                        '\u011d': 'g', '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
                        '\u0124': 'H', '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
                        '\u0128': 'I', '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
                        '\u0129': 'i', '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
                        '\u0134': 'J', '\u0135': 'j',
                        '\u0136': 'K', '\u0137': 'k', '\u0138': 'k',
                        '\u0139': 'L', '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
                        '\u013a': 'l', '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
                        '\u0143': 'N', '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
                        '\u0144': 'n', '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
                        '\u014c': 'O', '\u014e': 'O', '\u0150': 'O',
                        '\u014d': 'o', '\u014f': 'o', '\u0151': 'o',
                        '\u0154': 'R', '\u0156': 'R', '\u0158': 'R',
                        '\u0155': 'r', '\u0157': 'r', '\u0159': 'r',
                        '\u015a': 'S', '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
                        '\u015b': 's', '\u015d': 's', '\u015f': 's', '\u0161': 's',
                        '\u0162': 'T', '\u0164': 'T', '\u0166': 'T',
                        '\u0163': 't', '\u0165': 't', '\u0167': 't',
                        '\u0168': 'U', '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
                        '\u0169': 'u', '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
                        '\u0174': 'W', '\u0175': 'w',
                        '\u0176': 'Y', '\u0177': 'y', '\u0178': 'Y',
                        '\u0179': 'Z', '\u017b': 'Z', '\u017d': 'Z',
                        '\u017a': 'z', '\u017c': 'z', '\u017e': 'z',
                        '\u0132': 'IJ', '\u0133': 'ij',
                        '\u0152': 'Oe', '\u0153': 'oe',
                        '\u0149': "'n", '\u017f': 's'
                    };

                    /** Used to map characters to HTML entities. */
                    var htmlEscapes = {
                        '&': '&amp;',
                        '<': '&lt;',
                        '>': '&gt;',
                        '"': '&quot;',
                        "'": '&#39;'
                    };

                    /** Used to map HTML entities to characters. */
                    var htmlUnescapes = {
                        '&amp;': '&',
                        '&lt;': '<',
                        '&gt;': '>',
                        '&quot;': '"',
                        '&#39;': "'"
                    };

                    /** Used to escape characters for inclusion in compiled string literals. */
                    var stringEscapes = {
                        '\\': '\\',
                        "'": "'",
                        '\n': 'n',
                        '\r': 'r',
                        '\u2028': 'u2028',
                        '\u2029': 'u2029'
                    };

                    /** Built-in method references without a dependency on `root`. */
                    var freeParseFloat = parseFloat,
                        freeParseInt = parseInt;

                    /** Detect free variable `global` from Node.js. */
                    var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;

                    /** Detect free variable `self`. */
                    var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

                    /** Used as a reference to the global object. */
                    var root = freeGlobal || freeSelf || Function('return this')();

                    /** Detect free variable `exports`. */
                    var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

                    /** Detect free variable `module`. */
                    var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

                    /** Detect the popular CommonJS extension `module.exports`. */
                    var moduleExports = freeModule && freeModule.exports === freeExports;

                    /** Detect free variable `process` from Node.js. */
                    var freeProcess = moduleExports && freeGlobal.process;

                    /** Used to access faster Node.js helpers. */
                    var nodeUtil = (function () {
                        try {
                            // Use `util.types` for Node.js 10+.
                            var types = freeModule && freeModule.require && freeModule.require('util').types;

                            if (types) {
                                return types;
                            }

                            // Legacy `process.binding('util')` for Node.js < 10.
                            return freeProcess && freeProcess.binding && freeProcess.binding('util');
                        } catch (e) {
                        }
                    }());

                    /* Node.js helper references. */
                    var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
                        nodeIsDate = nodeUtil && nodeUtil.isDate,
                        nodeIsMap = nodeUtil && nodeUtil.isMap,
                        nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
                        nodeIsSet = nodeUtil && nodeUtil.isSet,
                        nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

                    /*--------------------------------------------------------------------------*/

                    /**
                     * A faster alternative to `Function#apply`, this function invokes `func`
                     * with the `this` binding of `thisArg` and the arguments of `args`.
                     *
                     * @private
                     * @param {Function} func The function to invoke.
                     * @param {*} thisArg The `this` binding of `func`.
                     * @param {Array} args The arguments to invoke `func` with.
                     * @returns {*} Returns the result of `func`.
                     */
                    function apply(func, thisArg, args) {
                        switch (args.length) {
                            case 0:
                                return func.call(thisArg);
                            case 1:
                                return func.call(thisArg, args[0]);
                            case 2:
                                return func.call(thisArg, args[0], args[1]);
                            case 3:
                                return func.call(thisArg, args[0], args[1], args[2]);
                        }
                        return func.apply(thisArg, args);
                    }

                    /**
                     * A specialized version of `baseAggregator` for arrays.
                     *
                     * @private
                     * @param {Array} [array] The array to iterate over.
                     * @param {Function} setter The function to set `accumulator` values.
                     * @param {Function} iteratee The iteratee to transform keys.
                     * @param {Object} accumulator The initial aggregated object.
                     * @returns {Function} Returns `accumulator`.
                     */
                    function arrayAggregator(array, setter, iteratee, accumulator) {
                        var index = -1,
                            length = array == null ? 0 : array.length;

                        while (++index < length) {
                            var value = array[index];
                            setter(accumulator, value, iteratee(value), array);
                        }
                        return accumulator;
                    }

                    /**
                     * A specialized version of `_.forEach` for arrays without support for
                     * iteratee shorthands.
                     *
                     * @private
                     * @param {Array} [array] The array to iterate over.
                     * @param {Function} iteratee The function invoked per iteration.
                     * @returns {Array} Returns `array`.
                     */
                    function arrayEach(array, iteratee) {
                        var index = -1,
                            length = array == null ? 0 : array.length;

                        while (++index < length) {
                            if (iteratee(array[index], index, array) === false) {
                                break;
                            }
                        }
                        return array;
                    }

                    /**
                     * A specialized version of `_.forEachRight` for arrays without support for
                     * iteratee shorthands.
                     *
                     * @private
                     * @param {Array} [array] The array to iterate over.
                     * @param {Function} iteratee The function invoked per iteration.
                     * @returns {Array} Returns `array`.
                     */
                    function arrayEachRight(array, iteratee) {
                        var length = array == null ? 0 : array.length;

                        while (length--) {
                            if (iteratee(array[length], length, array) === false) {
                                break;
                            }
                        }
                        return array;
                    }

                    /**
                     * A specialized version of `_.every` for arrays without support for
                     * iteratee shorthands.
                     *
                     * @private
                     * @param {Array} [array] The array to iterate over.
                     * @param {Function} predicate The function invoked per iteration.
                     * @returns {boolean} Returns `true` if all elements pass the predicate check,
                     *  else `false`.
                     */
                    function arrayEvery(array, predicate) {
                        var index = -1,
                            length = array == null ? 0 : array.length;

                        while (++index < length) {
                            if (!predicate(array[index], index, array)) {
                                return false;
                            }
                        }
                        return true;
                    }

                    /**
                     * A specialized version of `_.filter` for arrays without support for
                     * iteratee shorthands.
                     *
                     * @private
                     * @param {Array} [array] The array to iterate over.
                     * @param {Function} predicate The function invoked per iteration.
                     * @returns {Array} Returns the new filtered array.
                     */
                    function arrayFilter(array, predicate) {
                        var index = -1,
                            length = array == null ? 0 : array.length,
                            resIndex = 0,
                            result = [];

                        while (++index < length) {
                            var value = array[index];
                            if (predicate(value, index, array)) {
                                result[resIndex++] = value;
                            }
                        }
                        return result;
                    }

                    /**
                     * A specialized version of `_.includes` for arrays without support for
                     * specifying an index to search from.
                     *
                     * @private
                     * @param {Array} [array] The array to inspect.
                     * @param {*} target The value to search for.
                     * @returns {boolean} Returns `true` if `target` is found, else `false`.
                     */
                    function arrayIncludes(array, value) {
                        var length = array == null ? 0 : array.length;
                        return !!length && baseIndexOf(array, value, 0) > -1;
                    }

                    /**
                     * This function is like `arrayIncludes` except that it accepts a comparator.
                     *
                     * @private
                     * @param {Array} [array] The array to inspect.
                     * @param {*} target The value to search for.
                     * @param {Function} comparator The comparator invoked per element.
                     * @returns {boolean} Returns `true` if `target` is found, else `false`.
                     */
                    function arrayIncludesWith(array, value, comparator) {
                        var index = -1,
                            length = array == null ? 0 : array.length;

                        while (++index < length) {
                            if (comparator(value, array[index])) {
                                return true;
                            }
                        }
                        return false;
                    }

                    /**
                     * A specialized version of `_.map` for arrays without support for iteratee
                     * shorthands.
                     *
                     * @private
                     * @param {Array} [array] The array to iterate over.
                     * @param {Function} iteratee The function invoked per iteration.
                     * @returns {Array} Returns the new mapped array.
                     */
                    function arrayMap(array, iteratee) {
                        var index = -1,
                            length = array == null ? 0 : array.length,
                            result = Array(length);

                        while (++index < length) {
                            result[index] = iteratee(array[index], index, array);
                        }
                        return result;
                    }

                    /**
                     * Appends the elements of `values` to `array`.
                     *
                     * @private
                     * @param {Array} array The array to modify.
                     * @param {Array} values The values to append.
                     * @returns {Array} Returns `array`.
                     */
                    function arrayPush(array, values) {
                        var index = -1,
                            length = values.length,
                            offset = array.length;

                        while (++index < length) {
                            array[offset + index] = values[index];
                        }
                        return array;
                    }

                    /**
                     * A specialized version of `_.reduce` for arrays without support for
                     * iteratee shorthands.
                     *
                     * @private
                     * @param {Array} [array] The array to iterate over.
                     * @param {Function} iteratee The function invoked per iteration.
                     * @param {*} [accumulator] The initial value.
                     * @param {boolean} [initAccum] Specify using the first element of `array` as
                     *  the initial value.
                     * @returns {*} Returns the accumulated value.
                     */
                    function arrayReduce(array, iteratee, accumulator, initAccum) {
                        var index = -1,
                            length = array == null ? 0 : array.length;

                        if (initAccum && length) {
                            accumulator = array[++index];
                        }
                        while (++index < length) {
                            accumulator = iteratee(accumulator, array[index], index, array);
                        }
                        return accumulator;
                    }

                    /**
                     * A specialized version of `_.reduceRight` for arrays without support for
                     * iteratee shorthands.
                     *
                     * @private
                     * @param {Array} [array] The array to iterate over.
                     * @param {Function} iteratee The function invoked per iteration.
                     * @param {*} [accumulator] The initial value.
                     * @param {boolean} [initAccum] Specify using the last element of `array` as
                     *  the initial value.
                     * @returns {*} Returns the accumulated value.
                     */
                    function arrayReduceRight(array, iteratee, accumulator, initAccum) {
                        var length = array == null ? 0 : array.length;
                        if (initAccum && length) {
                            accumulator = array[--length];
                        }
                        while (length--) {
                            accumulator = iteratee(accumulator, array[length], length, array);
                        }
                        return accumulator;
                    }

                    /**
                     * A specialized version of `_.some` for arrays without support for iteratee
                     * shorthands.
                     *
                     * @private
                     * @param {Array} [array] The array to iterate over.
                     * @param {Function} predicate The function invoked per iteration.
                     * @returns {boolean} Returns `true` if any element passes the predicate check,
                     *  else `false`.
                     */
                    function arraySome(array, predicate) {
                        var index = -1,
                            length = array == null ? 0 : array.length;

                        while (++index < length) {
                            if (predicate(array[index], index, array)) {
                                return true;
                            }
                        }
                        return false;
                    }

                    /**
                     * Gets the size of an ASCII `string`.
                     *
                     * @private
                     * @param {string} string The string inspect.
                     * @returns {number} Returns the string size.
                     */
                    var asciiSize = baseProperty('length');

                    /**
                     * Converts an ASCII `string` to an array.
                     *
                     * @private
                     * @param {string} string The string to convert.
                     * @returns {Array} Returns the converted array.
                     */
                    function asciiToArray(string) {
                        return string.split('');
                    }

                    /**
                     * Splits an ASCII `string` into an array of its words.
                     *
                     * @private
                     * @param {string} The string to inspect.
                     * @returns {Array} Returns the words of `string`.
                     */
                    function asciiWords(string) {
                        return string.match(reAsciiWord) || [];
                    }

                    /**
                     * The base implementation of methods like `_.findKey` and `_.findLastKey`,
                     * without support for iteratee shorthands, which iterates over `collection`
                     * using `eachFunc`.
                     *
                     * @private
                     * @param {Array|Object} collection The collection to inspect.
                     * @param {Function} predicate The function invoked per iteration.
                     * @param {Function} eachFunc The function to iterate over `collection`.
                     * @returns {*} Returns the found element or its key, else `undefined`.
                     */
                    function baseFindKey(collection, predicate, eachFunc) {
                        var result;
                        eachFunc(collection, function (value, key, collection) {
                            if (predicate(value, key, collection)) {
                                result = key;
                                return false;
                            }
                        });
                        return result;
                    }

                    /**
                     * The base implementation of `_.findIndex` and `_.findLastIndex` without
                     * support for iteratee shorthands.
                     *
                     * @private
                     * @param {Array} array The array to inspect.
                     * @param {Function} predicate The function invoked per iteration.
                     * @param {number} fromIndex The index to search from.
                     * @param {boolean} [fromRight] Specify iterating from right to left.
                     * @returns {number} Returns the index of the matched value, else `-1`.
                     */
                    function baseFindIndex(array, predicate, fromIndex, fromRight) {
                        var length = array.length,
                            index = fromIndex + (fromRight ? 1 : -1);

                        while ((fromRight ? index-- : ++index < length)) {
                            if (predicate(array[index], index, array)) {
                                return index;
                            }
                        }
                        return -1;
                    }

                    /**
                     * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
                     *
                     * @private
                     * @param {Array} array The array to inspect.
                     * @param {*} value The value to search for.
                     * @param {number} fromIndex The index to search from.
                     * @returns {number} Returns the index of the matched value, else `-1`.
                     */
                    function baseIndexOf(array, value, fromIndex) {
                        return value === value
                            ? strictIndexOf(array, value, fromIndex)
                            : baseFindIndex(array, baseIsNaN, fromIndex);
                    }

                    /**
                     * This function is like `baseIndexOf` except that it accepts a comparator.
                     *
                     * @private
                     * @param {Array} array The array to inspect.
                     * @param {*} value The value to search for.
                     * @param {number} fromIndex The index to search from.
                     * @param {Function} comparator The comparator invoked per element.
                     * @returns {number} Returns the index of the matched value, else `-1`.
                     */
                    function baseIndexOfWith(array, value, fromIndex, comparator) {
                        var index = fromIndex - 1,
                            length = array.length;

                        while (++index < length) {
                            if (comparator(array[index], value)) {
                                return index;
                            }
                        }
                        return -1;
                    }

                    /**
                     * The base implementation of `_.isNaN` without support for number objects.
                     *
                     * @private
                     * @param {*} value The value to check.
                     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
                     */
                    function baseIsNaN(value) {
                        return value !== value;
                    }

                    /**
                     * The base implementation of `_.mean` and `_.meanBy` without support for
                     * iteratee shorthands.
                     *
                     * @private
                     * @param {Array} array The array to iterate over.
                     * @param {Function} iteratee The function invoked per iteration.
                     * @returns {number} Returns the mean.
                     */
                    function baseMean(array, iteratee) {
                        var length = array == null ? 0 : array.length;
                        return length ? (baseSum(array, iteratee) / length) : NAN;
                    }

                    /**
                     * The base implementation of `_.property` without support for deep paths.
                     *
                     * @private
                     * @param {string} key The key of the property to get.
                     * @returns {Function} Returns the new accessor function.
                     */
                    function baseProperty(key) {
                        return function (object) {
                            return object == null ? undefined : object[key];
                        };
                    }

                    /**
                     * The base implementation of `_.propertyOf` without support for deep paths.
                     *
                     * @private
                     * @param {Object} object The object to query.
                     * @returns {Function} Returns the new accessor function.
                     */
                    function basePropertyOf(object) {
                        return function (key) {
                            return object == null ? undefined : object[key];
                        };
                    }

                    /**
                     * The base implementation of `_.reduce` and `_.reduceRight`, without support
                     * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
                     *
                     * @private
                     * @param {Array|Object} collection The collection to iterate over.
                     * @param {Function} iteratee The function invoked per iteration.
                     * @param {*} accumulator The initial value.
                     * @param {boolean} initAccum Specify using the first or last element of
                     *  `collection` as the initial value.
                     * @param {Function} eachFunc The function to iterate over `collection`.
                     * @returns {*} Returns the accumulated value.
                     */
                    function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
                        eachFunc(collection, function (value, index, collection) {
                            accumulator = initAccum
                                ? (initAccum = false, value)
                                : iteratee(accumulator, value, index, collection);
                        });
                        return accumulator;
                    }

                    /**
                     * The base implementation of `_.sortBy` which uses `comparer` to define the
                     * sort order of `array` and replaces criteria objects with their corresponding
                     * values.
                     *
                     * @private
                     * @param {Array} array The array to sort.
                     * @param {Function} comparer The function to define sort order.
                     * @returns {Array} Returns `array`.
                     */
                    function baseSortBy(array, comparer) {
                        var length = array.length;

                        array.sort(comparer);
                        while (length--) {
                            array[length] = array[length].value;
                        }
                        return array;
                    }

                    /**
                     * The base implementation of `_.sum` and `_.sumBy` without support for
                     * iteratee shorthands.
                     *
                     * @private
                     * @param {Array} array The array to iterate over.
                     * @param {Function} iteratee The function invoked per iteration.
                     * @returns {number} Returns the sum.
                     */
                    function baseSum(array, iteratee) {
                        var result,
                            index = -1,
                            length = array.length;

                        while (++index < length) {
                            var current = iteratee(array[index]);
                            if (current !== undefined) {
                                result = result === undefined ? current : (result + current);
                            }
                        }
                        return result;
                    }

                    /**
                     * The base implementation of `_.times` without support for iteratee shorthands
                     * or max array length checks.
                     *
                     * @private
                     * @param {number} n The number of times to invoke `iteratee`.
                     * @param {Function} iteratee The function invoked per iteration.
                     * @returns {Array} Returns the array of results.
                     */
                    function baseTimes(n, iteratee) {
                        var index = -1,
                            result = Array(n);

                        while (++index < n) {
                            result[index] = iteratee(index);
                        }
                        return result;
                    }

                    /**
                     * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
                     * of key-value pairs for `object` corresponding to the property names of `props`.
                     *
                     * @private
                     * @param {Object} object The object to query.
                     * @param {Array} props The property names to get values for.
                     * @returns {Object} Returns the key-value pairs.
                     */
                    function baseToPairs(object, props) {
                        return arrayMap(props, function (key) {
                            return [key, object[key]];
                        });
                    }

                    /**
                     * The base implementation of `_.trim`.
                     *
                     * @private
                     * @param {string} string The string to trim.
                     * @returns {string} Returns the trimmed string.
                     */
                    function baseTrim(string) {
                        return string
                            ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')
                            : string;
                    }

                    /**
                     * The base implementation of `_.unary` without support for storing metadata.
                     *
                     * @private
                     * @param {Function} func The function to cap arguments for.
                     * @returns {Function} Returns the new capped function.
                     */
                    function baseUnary(func) {
                        return function (value) {
                            return func(value);
                        };
                    }

                    /**
                     * The base implementation of `_.values` and `_.valuesIn` which creates an
                     * array of `object` property values corresponding to the property names
                     * of `props`.
                     *
                     * @private
                     * @param {Object} object The object to query.
                     * @param {Array} props The property names to get values for.
                     * @returns {Object} Returns the array of property values.
                     */
                    function baseValues(object, props) {
                        return arrayMap(props, function (key) {
                            return object[key];
                        });
                    }

                    /**
                     * Checks if a `cache` value for `key` exists.
                     *
                     * @private
                     * @param {Object} cache The cache to query.
                     * @param {string} key The key of the entry to check.
                     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
                     */
                    function cacheHas(cache, key) {
                        return cache.has(key);
                    }

                    /**
                     * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
                     * that is not found in the character symbols.
                     *
                     * @private
                     * @param {Array} strSymbols The string symbols to inspect.
                     * @param {Array} chrSymbols The character symbols to find.
                     * @returns {number} Returns the index of the first unmatched string symbol.
                     */
                    function charsStartIndex(strSymbols, chrSymbols) {
                        var index = -1,
                            length = strSymbols.length;

                        while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {
                        }
                        return index;
                    }

                    /**
                     * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
                     * that is not found in the character symbols.
                     *
                     * @private
                     * @param {Array} strSymbols The string symbols to inspect.
                     * @param {Array} chrSymbols The character symbols to find.
                     * @returns {number} Returns the index of the last unmatched string symbol.
                     */
                    function charsEndIndex(strSymbols, chrSymbols) {
                        var index = strSymbols.length;

                        while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {
                        }
                        return index;
                    }

                    /**
                     * Gets the number of `placeholder` occurrences in `array`.
                     *
                     * @private
                     * @param {Array} array The array to inspect.
                     * @param {*} placeholder The placeholder to search for.
                     * @returns {number} Returns the placeholder count.
                     */
                    function countHolders(array, placeholder) {
                        var length = array.length,
                            result = 0;

                        while (length--) {
                            if (array[length] === placeholder) {
                                ++result;
                            }
                        }
                        return result;
                    }

                    /**
                     * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
                     * letters to basic Latin letters.
                     *
                     * @private
                     * @param {string} letter The matched letter to deburr.
                     * @returns {string} Returns the deburred letter.
                     */
                    var deburrLetter = basePropertyOf(deburredLetters);

                    /**
                     * Used by `_.escape` to convert characters to HTML entities.
                     *
                     * @private
                     * @param {string} chr The matched character to escape.
                     * @returns {string} Returns the escaped character.
                     */
                    var escapeHtmlChar = basePropertyOf(htmlEscapes);

                    /**
                     * Used by `_.template` to escape characters for inclusion in compiled string literals.
                     *
                     * @private
                     * @param {string} chr The matched character to escape.
                     * @returns {string} Returns the escaped character.
                     */
                    function escapeStringChar(chr) {
                        return '\\' + stringEscapes[chr];
                    }

                    /**
                     * Gets the value at `key` of `object`.
                     *
                     * @private
                     * @param {Object} [object] The object to query.
                     * @param {string} key The key of the property to get.
                     * @returns {*} Returns the property value.
                     */
                    function getValue(object, key) {
                        return object == null ? undefined : object[key];
                    }

                    /**
                     * Checks if `string` contains Unicode symbols.
                     *
                     * @private
                     * @param {string} string The string to inspect.
                     * @returns {boolean} Returns `true` if a symbol is found, else `false`.
                     */
                    function hasUnicode(string) {
                        return reHasUnicode.test(string);
                    }

                    /**
                     * Checks if `string` contains a word composed of Unicode symbols.
                     *
                     * @private
                     * @param {string} string The string to inspect.
                     * @returns {boolean} Returns `true` if a word is found, else `false`.
                     */
                    function hasUnicodeWord(string) {
                        return reHasUnicodeWord.test(string);
                    }

                    /**
                     * Converts `iterator` to an array.
                     *
                     * @private
                     * @param {Object} iterator The iterator to convert.
                     * @returns {Array} Returns the converted array.
                     */
                    function iteratorToArray(iterator) {
                        var data,
                            result = [];

                        while (!(data = iterator.next()).done) {
                            result.push(data.value);
                        }
                        return result;
                    }

                    /**
                     * Converts `map` to its key-value pairs.
                     *
                     * @private
                     * @param {Object} map The map to convert.
                     * @returns {Array} Returns the key-value pairs.
                     */
                    function mapToArray(map) {
                        var index = -1,
                            result = Array(map.size);

                        map.forEach(function (value, key) {
                            result[++index] = [key, value];
                        });
                        return result;
                    }

                    /**
                     * Creates a unary function that invokes `func` with its argument transformed.
                     *
                     * @private
                     * @param {Function} func The function to wrap.
                     * @param {Function} transform The argument transform.
                     * @returns {Function} Returns the new function.
                     */
                    function overArg(func, transform) {
                        return function (arg) {
                            return func(transform(arg));
                        };
                    }

                    /**
                     * Replaces all `placeholder` elements in `array` with an internal placeholder
                     * and returns an array of their indexes.
                     *
                     * @private
                     * @param {Array} array The array to modify.
                     * @param {*} placeholder The placeholder to replace.
                     * @returns {Array} Returns the new array of placeholder indexes.
                     */
                    function replaceHolders(array, placeholder) {
                        var index = -1,
                            length = array.length,
                            resIndex = 0,
                            result = [];

                        while (++index < length) {
                            var value = array[index];
                            if (value === placeholder || value === PLACEHOLDER) {
                                array[index] = PLACEHOLDER;
                                result[resIndex++] = index;
                            }
                        }
                        return result;
                    }

                    /**
                     * Converts `set` to an array of its values.
                     *
                     * @private
                     * @param {Object} set The set to convert.
                     * @returns {Array} Returns the values.
                     */
                    function setToArray(set) {
                        var index = -1,
                            result = Array(set.size);

                        set.forEach(function (value) {
                            result[++index] = value;
                        });
                        return result;
                    }

                    /**
                     * Converts `set` to its value-value pairs.
                     *
                     * @private
                     * @param {Object} set The set to convert.
                     * @returns {Array} Returns the value-value pairs.
                     */
                    function setToPairs(set) {
                        var index = -1,
                            result = Array(set.size);

                        set.forEach(function (value) {
                            result[++index] = [value, value];
                        });
                        return result;
                    }

                    /**
                     * A specialized version of `_.indexOf` which performs strict equality
                     * comparisons of values, i.e. `===`.
                     *
                     * @private
                     * @param {Array} array The array to inspect.
                     * @param {*} value The value to search for.
                     * @param {number} fromIndex The index to search from.
                     * @returns {number} Returns the index of the matched value, else `-1`.
                     */
                    function strictIndexOf(array, value, fromIndex) {
                        var index = fromIndex - 1,
                            length = array.length;

                        while (++index < length) {
                            if (array[index] === value) {
                                return index;
                            }
                        }
                        return -1;
                    }

                    /**
                     * A specialized version of `_.lastIndexOf` which performs strict equality
                     * comparisons of values, i.e. `===`.
                     *
                     * @private
                     * @param {Array} array The array to inspect.
                     * @param {*} value The value to search for.
                     * @param {number} fromIndex The index to search from.
                     * @returns {number} Returns the index of the matched value, else `-1`.
                     */
                    function strictLastIndexOf(array, value, fromIndex) {
                        var index = fromIndex + 1;
                        while (index--) {
                            if (array[index] === value) {
                                return index;
                            }
                        }
                        return index;
                    }

                    /**
                     * Gets the number of symbols in `string`.
                     *
                     * @private
                     * @param {string} string The string to inspect.
                     * @returns {number} Returns the string size.
                     */
                    function stringSize(string) {
                        return hasUnicode(string)
                            ? unicodeSize(string)
                            : asciiSize(string);
                    }

                    /**
                     * Converts `string` to an array.
                     *
                     * @private
                     * @param {string} string The string to convert.
                     * @returns {Array} Returns the converted array.
                     */
                    function stringToArray(string) {
                        return hasUnicode(string)
                            ? unicodeToArray(string)
                            : asciiToArray(string);
                    }

                    /**
                     * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace
                     * character of `string`.
                     *
                     * @private
                     * @param {string} string The string to inspect.
                     * @returns {number} Returns the index of the last non-whitespace character.
                     */
                    function trimmedEndIndex(string) {
                        var index = string.length;

                        while (index-- && reWhitespace.test(string.charAt(index))) {
                        }
                        return index;
                    }

                    /**
                     * Used by `_.unescape` to convert HTML entities to characters.
                     *
                     * @private
                     * @param {string} chr The matched character to unescape.
                     * @returns {string} Returns the unescaped character.
                     */
                    var unescapeHtmlChar = basePropertyOf(htmlUnescapes);

                    /**
                     * Gets the size of a Unicode `string`.
                     *
                     * @private
                     * @param {string} string The string inspect.
                     * @returns {number} Returns the string size.
                     */
                    function unicodeSize(string) {
                        var result = reUnicode.lastIndex = 0;
                        while (reUnicode.test(string)) {
                            ++result;
                        }
                        return result;
                    }

                    /**
                     * Converts a Unicode `string` to an array.
                     *
                     * @private
                     * @param {string} string The string to convert.
                     * @returns {Array} Returns the converted array.
                     */
                    function unicodeToArray(string) {
                        return string.match(reUnicode) || [];
                    }

                    /**
                     * Splits a Unicode `string` into an array of its words.
                     *
                     * @private
                     * @param {string} The string to inspect.
                     * @returns {Array} Returns the words of `string`.
                     */
                    function unicodeWords(string) {
                        return string.match(reUnicodeWord) || [];
                    }

                    /*--------------------------------------------------------------------------*/

                    /**
                     * Create a new pristine `lodash` function using the `context` object.
                     *
                     * @static
                     * @memberOf _
                     * @since 1.1.0
                     * @category Util
                     * @param {Object} [context=root] The context object.
                     * @returns {Function} Returns a new `lodash` function.
                     * @example
                     *
                     * _.mixin({ 'foo': _.constant('foo') });
                     *
                     * var lodash = _.runInContext();
                     * lodash.mixin({ 'bar': lodash.constant('bar') });
                     *
                     * _.isFunction(_.foo);
                     * // => true
                     * _.isFunction(_.bar);
                     * // => false
                     *
                     * lodash.isFunction(lodash.foo);
                     * // => false
                     * lodash.isFunction(lodash.bar);
                     * // => true
                     *
                     * // Create a suped-up `defer` in Node.js.
                     * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
                     */
                    var runInContext = (function runInContext(context) {
                        context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));

                        /** Built-in constructor references. */
                        var Array = context.Array,
                            Date = context.Date,
                            Error = context.Error,
                            Function = context.Function,
                            Math = context.Math,
                            Object = context.Object,
                            RegExp = context.RegExp,
                            String = context.String,
                            TypeError = context.TypeError;

                        /** Used for built-in method references. */
                        var arrayProto = Array.prototype,
                            funcProto = Function.prototype,
                            objectProto = Object.prototype;

                        /** Used to detect overreaching core-js shims. */
                        var coreJsData = context['__core-js_shared__'];

                        /** Used to resolve the decompiled source of functions. */
                        var funcToString = funcProto.toString;

                        /** Used to check objects for own properties. */
                        var hasOwnProperty = objectProto.hasOwnProperty;

                        /** Used to generate unique IDs. */
                        var idCounter = 0;

                        /** Used to detect methods masquerading as native. */
                        var maskSrcKey = (function () {
                            var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
                            return uid ? ('Symbol(src)_1.' + uid) : '';
                        }());

                        /**
                         * Used to resolve the
                         * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
                         * of values.
                         */
                        var nativeObjectToString = objectProto.toString;

                        /** Used to infer the `Object` constructor. */
                        var objectCtorString = funcToString.call(Object);

                        /** Used to restore the original `_` reference in `_.noConflict`. */
                        var oldDash = root._;

                        /** Used to detect if a method is native. */
                        var reIsNative = RegExp('^' +
                            funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
                                .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
                        );

                        /** Built-in value references. */
                        var Buffer = moduleExports ? context.Buffer : undefined,
                            Symbol = context.Symbol,
                            Uint8Array = context.Uint8Array,
                            allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,
                            getPrototype = overArg(Object.getPrototypeOf, Object),
                            objectCreate = Object.create,
                            propertyIsEnumerable = objectProto.propertyIsEnumerable,
                            splice = arrayProto.splice,
                            spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,
                            symIterator = Symbol ? Symbol.iterator : undefined,
                            symToStringTag = Symbol ? Symbol.toStringTag : undefined;

                        var defineProperty = (function () {
                            try {
                                var func = getNative(Object, 'defineProperty');
                                func({}, '', {});
                                return func;
                            } catch (e) {
                            }
                        }());

                        /** Mocked built-ins. */
                        var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
                            ctxNow = Date && Date.now !== root.Date.now && Date.now,
                            ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;

                        /* Built-in method references for those with the same name as other `lodash` methods. */
                        var nativeCeil = Math.ceil,
                            nativeFloor = Math.floor,
                            nativeGetSymbols = Object.getOwnPropertySymbols,
                            nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
                            nativeIsFinite = context.isFinite,
                            nativeJoin = arrayProto.join,
                            nativeKeys = overArg(Object.keys, Object),
                            nativeMax = Math.max,
                            nativeMin = Math.min,
                            nativeNow = Date.now,
                            nativeParseInt = context.parseInt,
                            nativeRandom = Math.random,
                            nativeReverse = arrayProto.reverse;

                        /* Built-in method references that are verified to be native. */
                        var DataView = getNative(context, 'DataView'),
                            Map = getNative(context, 'Map'),
                            Promise = getNative(context, 'Promise'),
                            Set = getNative(context, 'Set'),
                            WeakMap = getNative(context, 'WeakMap'),
                            nativeCreate = getNative(Object, 'create');

                        /** Used to store function metadata. */
                        var metaMap = WeakMap && new WeakMap;

                        /** Used to lookup unminified function names. */
                        var realNames = {};

                        /** Used to detect maps, sets, and weakmaps. */
                        var dataViewCtorString = toSource(DataView),
                            mapCtorString = toSource(Map),
                            promiseCtorString = toSource(Promise),
                            setCtorString = toSource(Set),
                            weakMapCtorString = toSource(WeakMap);

                        /** Used to convert symbols to primitives and strings. */
                        var symbolProto = Symbol ? Symbol.prototype : undefined,
                            symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,
                            symbolToString = symbolProto ? symbolProto.toString : undefined;

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates a `lodash` object which wraps `value` to enable implicit method
                         * chain sequences. Methods that operate on and return arrays, collections,
                         * and functions can be chained together. Methods that retrieve a single value
                         * or may return a primitive value will automatically end the chain sequence
                         * and return the unwrapped value. Otherwise, the value must be unwrapped
                         * with `_#value`.
                         *
                         * Explicit chain sequences, which must be unwrapped with `_#value`, may be
                         * enabled using `_.chain`.
                         *
                         * The execution of chained methods is lazy, that is, it's deferred until
                         * `_#value` is implicitly or explicitly called.
                         *
                         * Lazy evaluation allows several methods to support shortcut fusion.
                         * Shortcut fusion is an optimization to merge iteratee calls; this avoids
                         * the creation of intermediate arrays and can greatly reduce the number of
                         * iteratee executions. Sections of a chain sequence qualify for shortcut
                         * fusion if the section is applied to an array and iteratees accept only
                         * one argument. The heuristic for whether a section qualifies for shortcut
                         * fusion is subject to change.
                         *
                         * Chaining is supported in custom builds as long as the `_#value` method is
                         * directly or indirectly included in the build.
                         *
                         * In addition to lodash methods, wrappers have `Array` and `String` methods.
                         *
                         * The wrapper `Array` methods are:
                         * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
                         *
                         * The wrapper `String` methods are:
                         * `replace` and `split`
                         *
                         * The wrapper methods that support shortcut fusion are:
                         * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
                         * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
                         * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
                         *
                         * The chainable wrapper methods are:
                         * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
                         * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
                         * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
                         * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
                         * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
                         * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
                         * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
                         * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
                         * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
                         * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
                         * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
                         * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
                         * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
                         * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
                         * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
                         * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
                         * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
                         * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
                         * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
                         * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
                         * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
                         * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
                         * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
                         * `zipObject`, `zipObjectDeep`, and `zipWith`
                         *
                         * The wrapper methods that are **not** chainable by default are:
                         * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
                         * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
                         * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
                         * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
                         * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
                         * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
                         * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
                         * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
                         * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
                         * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
                         * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
                         * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
                         * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
                         * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
                         * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
                         * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
                         * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
                         * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
                         * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
                         * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
                         * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
                         * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
                         * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
                         * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
                         * `upperFirst`, `value`, and `words`
                         *
                         * @name _
                         * @constructor
                         * @category Seq
                         * @param {*} value The value to wrap in a `lodash` instance.
                         * @returns {Object} Returns the new `lodash` wrapper instance.
                         * @example
                         *
                         * function square(n) {
                         *   return n * n;
                         * }
                         *
                         * var wrapped = _([1, 2, 3]);
                         *
                         * // Returns an unwrapped value.
                         * wrapped.reduce(_.add);
                         * // => 6
                         *
                         * // Returns a wrapped value.
                         * var squares = wrapped.map(square);
                         *
                         * _.isArray(squares);
                         * // => false
                         *
                         * _.isArray(squares.value());
                         * // => true
                         */
                        function lodash(value) {
                            if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
                                if (value instanceof LodashWrapper) {
                                    return value;
                                }
                                if (hasOwnProperty.call(value, '__wrapped__')) {
                                    return wrapperClone(value);
                                }
                            }
                            return new LodashWrapper(value);
                        }

                        /**
                         * The base implementation of `_.create` without support for assigning
                         * properties to the created object.
                         *
                         * @private
                         * @param {Object} proto The object to inherit from.
                         * @returns {Object} Returns the new object.
                         */
                        var baseCreate = (function () {
                            function object() {
                            }

                            return function (proto) {
                                if (!isObject(proto)) {
                                    return {};
                                }
                                if (objectCreate) {
                                    return objectCreate(proto);
                                }
                                object.prototype = proto;
                                var result = new object;
                                object.prototype = undefined;
                                return result;
                            };
                        }());

                        /**
                         * The function whose prototype chain sequence wrappers inherit from.
                         *
                         * @private
                         */
                        function baseLodash() {
                            // No operation performed.
                        }

                        /**
                         * The base constructor for creating `lodash` wrapper objects.
                         *
                         * @private
                         * @param {*} value The value to wrap.
                         * @param {boolean} [chainAll] Enable explicit method chain sequences.
                         */
                        function LodashWrapper(value, chainAll) {
                            this.__wrapped__ = value;
                            this.__actions__ = [];
                            this.__chain__ = !!chainAll;
                            this.__index__ = 0;
                            this.__values__ = undefined;
                        }

                        /**
                         * By default, the template delimiters used by lodash are like those in
                         * embedded Ruby (ERB) as well as ES2015 template strings. Change the
                         * following template settings to use alternative delimiters.
                         *
                         * @static
                         * @memberOf _
                         * @type {Object}
                         */
                        lodash.templateSettings = {

                            /**
                             * Used to detect `data` property values to be HTML-escaped.
                             *
                             * @memberOf _.templateSettings
                             * @type {RegExp}
                             */
                            'escape': reEscape,

                            /**
                             * Used to detect code to be evaluated.
                             *
                             * @memberOf _.templateSettings
                             * @type {RegExp}
                             */
                            'evaluate': reEvaluate,

                            /**
                             * Used to detect `data` property values to inject.
                             *
                             * @memberOf _.templateSettings
                             * @type {RegExp}
                             */
                            'interpolate': reInterpolate,

                            /**
                             * Used to reference the data object in the template text.
                             *
                             * @memberOf _.templateSettings
                             * @type {string}
                             */
                            'variable': '',

                            /**
                             * Used to import variables into the compiled template.
                             *
                             * @memberOf _.templateSettings
                             * @type {Object}
                             */
                            'imports': {

                                /**
                                 * A reference to the `lodash` function.
                                 *
                                 * @memberOf _.templateSettings.imports
                                 * @type {Function}
                                 */
                                '_': lodash
                            }
                        };

                        // Ensure wrappers are instances of `baseLodash`.
                        lodash.prototype = baseLodash.prototype;
                        lodash.prototype.constructor = lodash;

                        LodashWrapper.prototype = baseCreate(baseLodash.prototype);
                        LodashWrapper.prototype.constructor = LodashWrapper;

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
                         *
                         * @private
                         * @constructor
                         * @param {*} value The value to wrap.
                         */
                        function LazyWrapper(value) {
                            this.__wrapped__ = value;
                            this.__actions__ = [];
                            this.__dir__ = 1;
                            this.__filtered__ = false;
                            this.__iteratees__ = [];
                            this.__takeCount__ = MAX_ARRAY_LENGTH;
                            this.__views__ = [];
                        }

                        /**
                         * Creates a clone of the lazy wrapper object.
                         *
                         * @private
                         * @name clone
                         * @memberOf LazyWrapper
                         * @returns {Object} Returns the cloned `LazyWrapper` object.
                         */
                        function lazyClone() {
                            var result = new LazyWrapper(this.__wrapped__);
                            result.__actions__ = copyArray(this.__actions__);
                            result.__dir__ = this.__dir__;
                            result.__filtered__ = this.__filtered__;
                            result.__iteratees__ = copyArray(this.__iteratees__);
                            result.__takeCount__ = this.__takeCount__;
                            result.__views__ = copyArray(this.__views__);
                            return result;
                        }

                        /**
                         * Reverses the direction of lazy iteration.
                         *
                         * @private
                         * @name reverse
                         * @memberOf LazyWrapper
                         * @returns {Object} Returns the new reversed `LazyWrapper` object.
                         */
                        function lazyReverse() {
                            if (this.__filtered__) {
                                var result = new LazyWrapper(this);
                                result.__dir__ = -1;
                                result.__filtered__ = true;
                            } else {
                                result = this.clone();
                                result.__dir__ *= -1;
                            }
                            return result;
                        }

                        /**
                         * Extracts the unwrapped value from its lazy wrapper.
                         *
                         * @private
                         * @name value
                         * @memberOf LazyWrapper
                         * @returns {*} Returns the unwrapped value.
                         */
                        function lazyValue() {
                            var array = this.__wrapped__.value(),
                                dir = this.__dir__,
                                isArr = isArray(array),
                                isRight = dir < 0,
                                arrLength = isArr ? array.length : 0,
                                view = getView(0, arrLength, this.__views__),
                                start = view.start,
                                end = view.end,
                                length = end - start,
                                index = isRight ? end : (start - 1),
                                iteratees = this.__iteratees__,
                                iterLength = iteratees.length,
                                resIndex = 0,
                                takeCount = nativeMin(length, this.__takeCount__);

                            if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
                                return baseWrapperValue(array, this.__actions__);
                            }
                            var result = [];

                            outer:
                                while (length-- && resIndex < takeCount) {
                                    index += dir;

                                    var iterIndex = -1,
                                        value = array[index];

                                    while (++iterIndex < iterLength) {
                                        var data = iteratees[iterIndex],
                                            iteratee = data.iteratee,
                                            type = data.type,
                                            computed = iteratee(value);

                                        if (type == LAZY_MAP_FLAG) {
                                            value = computed;
                                        } else if (!computed) {
                                            if (type == LAZY_FILTER_FLAG) {
                                                continue outer;
                                            } else {
                                                break outer;
                                            }
                                        }
                                    }
                                    result[resIndex++] = value;
                                }
                            return result;
                        }

                        // Ensure `LazyWrapper` is an instance of `baseLodash`.
                        LazyWrapper.prototype = baseCreate(baseLodash.prototype);
                        LazyWrapper.prototype.constructor = LazyWrapper;

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates a hash object.
                         *
                         * @private
                         * @constructor
                         * @param {Array} [entries] The key-value pairs to cache.
                         */
                        function Hash(entries) {
                            var index = -1,
                                length = entries == null ? 0 : entries.length;

                            this.clear();
                            while (++index < length) {
                                var entry = entries[index];
                                this.set(entry[0], entry[1]);
                            }
                        }

                        /**
                         * Removes all key-value entries from the hash.
                         *
                         * @private
                         * @name clear
                         * @memberOf Hash
                         */
                        function hashClear() {
                            this.__data__ = nativeCreate ? nativeCreate(null) : {};
                            this.size = 0;
                        }

                        /**
                         * Removes `key` and its value from the hash.
                         *
                         * @private
                         * @name delete
                         * @memberOf Hash
                         * @param {Object} hash The hash to modify.
                         * @param {string} key The key of the value to remove.
                         * @returns {boolean} Returns `true` if the entry was removed, else `false`.
                         */
                        function hashDelete(key) {
                            var result = this.has(key) && delete this.__data__[key];
                            this.size -= result ? 1 : 0;
                            return result;
                        }

                        /**
                         * Gets the hash value for `key`.
                         *
                         * @private
                         * @name get
                         * @memberOf Hash
                         * @param {string} key The key of the value to get.
                         * @returns {*} Returns the entry value.
                         */
                        function hashGet(key) {
                            var data = this.__data__;
                            if (nativeCreate) {
                                var result = data[key];
                                return result === HASH_UNDEFINED ? undefined : result;
                            }
                            return hasOwnProperty.call(data, key) ? data[key] : undefined;
                        }

                        /**
                         * Checks if a hash value for `key` exists.
                         *
                         * @private
                         * @name has
                         * @memberOf Hash
                         * @param {string} key The key of the entry to check.
                         * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
                         */
                        function hashHas(key) {
                            var data = this.__data__;
                            return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
                        }

                        /**
                         * Sets the hash `key` to `value`.
                         *
                         * @private
                         * @name set
                         * @memberOf Hash
                         * @param {string} key The key of the value to set.
                         * @param {*} value The value to set.
                         * @returns {Object} Returns the hash instance.
                         */
                        function hashSet(key, value) {
                            var data = this.__data__;
                            this.size += this.has(key) ? 0 : 1;
                            data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
                            return this;
                        }

                        // Add methods to `Hash`.
                        Hash.prototype.clear = hashClear;
                        Hash.prototype['delete'] = hashDelete;
                        Hash.prototype.get = hashGet;
                        Hash.prototype.has = hashHas;
                        Hash.prototype.set = hashSet;

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates an list cache object.
                         *
                         * @private
                         * @constructor
                         * @param {Array} [entries] The key-value pairs to cache.
                         */
                        function ListCache(entries) {
                            var index = -1,
                                length = entries == null ? 0 : entries.length;

                            this.clear();
                            while (++index < length) {
                                var entry = entries[index];
                                this.set(entry[0], entry[1]);
                            }
                        }

                        /**
                         * Removes all key-value entries from the list cache.
                         *
                         * @private
                         * @name clear
                         * @memberOf ListCache
                         */
                        function listCacheClear() {
                            this.__data__ = [];
                            this.size = 0;
                        }

                        /**
                         * Removes `key` and its value from the list cache.
                         *
                         * @private
                         * @name delete
                         * @memberOf ListCache
                         * @param {string} key The key of the value to remove.
                         * @returns {boolean} Returns `true` if the entry was removed, else `false`.
                         */
                        function listCacheDelete(key) {
                            var data = this.__data__,
                                index = assocIndexOf(data, key);

                            if (index < 0) {
                                return false;
                            }
                            var lastIndex = data.length - 1;
                            if (index == lastIndex) {
                                data.pop();
                            } else {
                                splice.call(data, index, 1);
                            }
                            --this.size;
                            return true;
                        }

                        /**
                         * Gets the list cache value for `key`.
                         *
                         * @private
                         * @name get
                         * @memberOf ListCache
                         * @param {string} key The key of the value to get.
                         * @returns {*} Returns the entry value.
                         */
                        function listCacheGet(key) {
                            var data = this.__data__,
                                index = assocIndexOf(data, key);

                            return index < 0 ? undefined : data[index][1];
                        }

                        /**
                         * Checks if a list cache value for `key` exists.
                         *
                         * @private
                         * @name has
                         * @memberOf ListCache
                         * @param {string} key The key of the entry to check.
                         * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
                         */
                        function listCacheHas(key) {
                            return assocIndexOf(this.__data__, key) > -1;
                        }

                        /**
                         * Sets the list cache `key` to `value`.
                         *
                         * @private
                         * @name set
                         * @memberOf ListCache
                         * @param {string} key The key of the value to set.
                         * @param {*} value The value to set.
                         * @returns {Object} Returns the list cache instance.
                         */
                        function listCacheSet(key, value) {
                            var data = this.__data__,
                                index = assocIndexOf(data, key);

                            if (index < 0) {
                                ++this.size;
                                data.push([key, value]);
                            } else {
                                data[index][1] = value;
                            }
                            return this;
                        }

                        // Add methods to `ListCache`.
                        ListCache.prototype.clear = listCacheClear;
                        ListCache.prototype['delete'] = listCacheDelete;
                        ListCache.prototype.get = listCacheGet;
                        ListCache.prototype.has = listCacheHas;
                        ListCache.prototype.set = listCacheSet;

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates a map cache object to store key-value pairs.
                         *
                         * @private
                         * @constructor
                         * @param {Array} [entries] The key-value pairs to cache.
                         */
                        function MapCache(entries) {
                            var index = -1,
                                length = entries == null ? 0 : entries.length;

                            this.clear();
                            while (++index < length) {
                                var entry = entries[index];
                                this.set(entry[0], entry[1]);
                            }
                        }

                        /**
                         * Removes all key-value entries from the map.
                         *
                         * @private
                         * @name clear
                         * @memberOf MapCache
                         */
                        function mapCacheClear() {
                            this.size = 0;
                            this.__data__ = {
                                'hash': new Hash,
                                'map': new (Map || ListCache),
                                'string': new Hash
                            };
                        }

                        /**
                         * Removes `key` and its value from the map.
                         *
                         * @private
                         * @name delete
                         * @memberOf MapCache
                         * @param {string} key The key of the value to remove.
                         * @returns {boolean} Returns `true` if the entry was removed, else `false`.
                         */
                        function mapCacheDelete(key) {
                            var result = getMapData(this, key)['delete'](key);
                            this.size -= result ? 1 : 0;
                            return result;
                        }

                        /**
                         * Gets the map value for `key`.
                         *
                         * @private
                         * @name get
                         * @memberOf MapCache
                         * @param {string} key The key of the value to get.
                         * @returns {*} Returns the entry value.
                         */
                        function mapCacheGet(key) {
                            return getMapData(this, key).get(key);
                        }

                        /**
                         * Checks if a map value for `key` exists.
                         *
                         * @private
                         * @name has
                         * @memberOf MapCache
                         * @param {string} key The key of the entry to check.
                         * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
                         */
                        function mapCacheHas(key) {
                            return getMapData(this, key).has(key);
                        }

                        /**
                         * Sets the map `key` to `value`.
                         *
                         * @private
                         * @name set
                         * @memberOf MapCache
                         * @param {string} key The key of the value to set.
                         * @param {*} value The value to set.
                         * @returns {Object} Returns the map cache instance.
                         */
                        function mapCacheSet(key, value) {
                            var data = getMapData(this, key),
                                size = data.size;

                            data.set(key, value);
                            this.size += data.size == size ? 0 : 1;
                            return this;
                        }

                        // Add methods to `MapCache`.
                        MapCache.prototype.clear = mapCacheClear;
                        MapCache.prototype['delete'] = mapCacheDelete;
                        MapCache.prototype.get = mapCacheGet;
                        MapCache.prototype.has = mapCacheHas;
                        MapCache.prototype.set = mapCacheSet;

                        /*------------------------------------------------------------------------*/

                        /**
                         *
                         * Creates an array cache object to store unique values.
                         *
                         * @private
                         * @constructor
                         * @param {Array} [values] The values to cache.
                         */
                        function SetCache(values) {
                            var index = -1,
                                length = values == null ? 0 : values.length;

                            this.__data__ = new MapCache;
                            while (++index < length) {
                                this.add(values[index]);
                            }
                        }

                        /**
                         * Adds `value` to the array cache.
                         *
                         * @private
                         * @name add
                         * @memberOf SetCache
                         * @alias push
                         * @param {*} value The value to cache.
                         * @returns {Object} Returns the cache instance.
                         */
                        function setCacheAdd(value) {
                            this.__data__.set(value, HASH_UNDEFINED);
                            return this;
                        }

                        /**
                         * Checks if `value` is in the array cache.
                         *
                         * @private
                         * @name has
                         * @memberOf SetCache
                         * @param {*} value The value to search for.
                         * @returns {number} Returns `true` if `value` is found, else `false`.
                         */
                        function setCacheHas(value) {
                            return this.__data__.has(value);
                        }

                        // Add methods to `SetCache`.
                        SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
                        SetCache.prototype.has = setCacheHas;

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates a stack cache object to store key-value pairs.
                         *
                         * @private
                         * @constructor
                         * @param {Array} [entries] The key-value pairs to cache.
                         */
                        function Stack(entries) {
                            var data = this.__data__ = new ListCache(entries);
                            this.size = data.size;
                        }

                        /**
                         * Removes all key-value entries from the stack.
                         *
                         * @private
                         * @name clear
                         * @memberOf Stack
                         */
                        function stackClear() {
                            this.__data__ = new ListCache;
                            this.size = 0;
                        }

                        /**
                         * Removes `key` and its value from the stack.
                         *
                         * @private
                         * @name delete
                         * @memberOf Stack
                         * @param {string} key The key of the value to remove.
                         * @returns {boolean} Returns `true` if the entry was removed, else `false`.
                         */
                        function stackDelete(key) {
                            var data = this.__data__,
                                result = data['delete'](key);

                            this.size = data.size;
                            return result;
                        }

                        /**
                         * Gets the stack value for `key`.
                         *
                         * @private
                         * @name get
                         * @memberOf Stack
                         * @param {string} key The key of the value to get.
                         * @returns {*} Returns the entry value.
                         */
                        function stackGet(key) {
                            return this.__data__.get(key);
                        }

                        /**
                         * Checks if a stack value for `key` exists.
                         *
                         * @private
                         * @name has
                         * @memberOf Stack
                         * @param {string} key The key of the entry to check.
                         * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
                         */
                        function stackHas(key) {
                            return this.__data__.has(key);
                        }

                        /**
                         * Sets the stack `key` to `value`.
                         *
                         * @private
                         * @name set
                         * @memberOf Stack
                         * @param {string} key The key of the value to set.
                         * @param {*} value The value to set.
                         * @returns {Object} Returns the stack cache instance.
                         */
                        function stackSet(key, value) {
                            var data = this.__data__;
                            if (data instanceof ListCache) {
                                var pairs = data.__data__;
                                if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
                                    pairs.push([key, value]);
                                    this.size = ++data.size;
                                    return this;
                                }
                                data = this.__data__ = new MapCache(pairs);
                            }
                            data.set(key, value);
                            this.size = data.size;
                            return this;
                        }

                        // Add methods to `Stack`.
                        Stack.prototype.clear = stackClear;
                        Stack.prototype['delete'] = stackDelete;
                        Stack.prototype.get = stackGet;
                        Stack.prototype.has = stackHas;
                        Stack.prototype.set = stackSet;

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates an array of the enumerable property names of the array-like `value`.
                         *
                         * @private
                         * @param {*} value The value to query.
                         * @param {boolean} inherited Specify returning inherited property names.
                         * @returns {Array} Returns the array of property names.
                         */
                        function arrayLikeKeys(value, inherited) {
                            var isArr = isArray(value),
                                isArg = !isArr && isArguments(value),
                                isBuff = !isArr && !isArg && isBuffer(value),
                                isType = !isArr && !isArg && !isBuff && isTypedArray(value),
                                skipIndexes = isArr || isArg || isBuff || isType,
                                result = skipIndexes ? baseTimes(value.length, String) : [],
                                length = result.length;

                            for (var key in value) {
                                if ((inherited || hasOwnProperty.call(value, key)) &&
                                    !(skipIndexes && (
                                        // Safari 9 has enumerable `arguments.length` in strict mode.
                                        key == 'length' ||
                                        // Node.js 0.10 has enumerable non-index properties on buffers.
                                        (isBuff && (key == 'offset' || key == 'parent')) ||
                                        // PhantomJS 2 has enumerable non-index properties on typed arrays.
                                        (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
                                        // Skip index properties.
                                        isIndex(key, length)
                                    ))) {
                                    result.push(key);
                                }
                            }
                            return result;
                        }

                        /**
                         * A specialized version of `_.sample` for arrays.
                         *
                         * @private
                         * @param {Array} array The array to sample.
                         * @returns {*} Returns the random element.
                         */
                        function arraySample(array) {
                            var length = array.length;
                            return length ? array[baseRandom(0, length - 1)] : undefined;
                        }

                        /**
                         * A specialized version of `_.sampleSize` for arrays.
                         *
                         * @private
                         * @param {Array} array The array to sample.
                         * @param {number} n The number of elements to sample.
                         * @returns {Array} Returns the random elements.
                         */
                        function arraySampleSize(array, n) {
                            return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
                        }

                        /**
                         * A specialized version of `_.shuffle` for arrays.
                         *
                         * @private
                         * @param {Array} array The array to shuffle.
                         * @returns {Array} Returns the new shuffled array.
                         */
                        function arrayShuffle(array) {
                            return shuffleSelf(copyArray(array));
                        }

                        /**
                         * This function is like `assignValue` except that it doesn't assign
                         * `undefined` values.
                         *
                         * @private
                         * @param {Object} object The object to modify.
                         * @param {string} key The key of the property to assign.
                         * @param {*} value The value to assign.
                         */
                        function assignMergeValue(object, key, value) {
                            if ((value !== undefined && !eq(object[key], value)) ||
                                (value === undefined && !(key in object))) {
                                baseAssignValue(object, key, value);
                            }
                        }

                        /**
                         * Assigns `value` to `key` of `object` if the existing value is not equivalent
                         * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * for equality comparisons.
                         *
                         * @private
                         * @param {Object} object The object to modify.
                         * @param {string} key The key of the property to assign.
                         * @param {*} value The value to assign.
                         */
                        function assignValue(object, key, value) {
                            var objValue = object[key];
                            if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
                                (value === undefined && !(key in object))) {
                                baseAssignValue(object, key, value);
                            }
                        }

                        /**
                         * Gets the index at which the `key` is found in `array` of key-value pairs.
                         *
                         * @private
                         * @param {Array} array The array to inspect.
                         * @param {*} key The key to search for.
                         * @returns {number} Returns the index of the matched value, else `-1`.
                         */
                        function assocIndexOf(array, key) {
                            var length = array.length;
                            while (length--) {
                                if (eq(array[length][0], key)) {
                                    return length;
                                }
                            }
                            return -1;
                        }

                        /**
                         * Aggregates elements of `collection` on `accumulator` with keys transformed
                         * by `iteratee` and values set by `setter`.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} setter The function to set `accumulator` values.
                         * @param {Function} iteratee The iteratee to transform keys.
                         * @param {Object} accumulator The initial aggregated object.
                         * @returns {Function} Returns `accumulator`.
                         */
                        function baseAggregator(collection, setter, iteratee, accumulator) {
                            baseEach(collection, function (value, key, collection) {
                                setter(accumulator, value, iteratee(value), collection);
                            });
                            return accumulator;
                        }

                        /**
                         * The base implementation of `_.assign` without support for multiple sources
                         * or `customizer` functions.
                         *
                         * @private
                         * @param {Object} object The destination object.
                         * @param {Object} source The source object.
                         * @returns {Object} Returns `object`.
                         */
                        function baseAssign(object, source) {
                            return object && copyObject(source, keys(source), object);
                        }

                        /**
                         * The base implementation of `_.assignIn` without support for multiple sources
                         * or `customizer` functions.
                         *
                         * @private
                         * @param {Object} object The destination object.
                         * @param {Object} source The source object.
                         * @returns {Object} Returns `object`.
                         */
                        function baseAssignIn(object, source) {
                            return object && copyObject(source, keysIn(source), object);
                        }

                        /**
                         * The base implementation of `assignValue` and `assignMergeValue` without
                         * value checks.
                         *
                         * @private
                         * @param {Object} object The object to modify.
                         * @param {string} key The key of the property to assign.
                         * @param {*} value The value to assign.
                         */
                        function baseAssignValue(object, key, value) {
                            if (key == '__proto__' && defineProperty) {
                                defineProperty(object, key, {
                                    'configurable': true,
                                    'enumerable': true,
                                    'value': value,
                                    'writable': true
                                });
                            } else {
                                object[key] = value;
                            }
                        }

                        /**
                         * The base implementation of `_.at` without support for individual paths.
                         *
                         * @private
                         * @param {Object} object The object to iterate over.
                         * @param {string[]} paths The property paths to pick.
                         * @returns {Array} Returns the picked elements.
                         */
                        function baseAt(object, paths) {
                            var index = -1,
                                length = paths.length,
                                result = Array(length),
                                skip = object == null;

                            while (++index < length) {
                                result[index] = skip ? undefined : get(object, paths[index]);
                            }
                            return result;
                        }

                        /**
                         * The base implementation of `_.clamp` which doesn't coerce arguments.
                         *
                         * @private
                         * @param {number} number The number to clamp.
                         * @param {number} [lower] The lower bound.
                         * @param {number} upper The upper bound.
                         * @returns {number} Returns the clamped number.
                         */
                        function baseClamp(number, lower, upper) {
                            if (number === number) {
                                if (upper !== undefined) {
                                    number = number <= upper ? number : upper;
                                }
                                if (lower !== undefined) {
                                    number = number >= lower ? number : lower;
                                }
                            }
                            return number;
                        }

                        /**
                         * The base implementation of `_.clone` and `_.cloneDeep` which tracks
                         * traversed objects.
                         *
                         * @private
                         * @param {*} value The value to clone.
                         * @param {boolean} bitmask The bitmask flags.
                         *  1 - Deep clone
                         *  2 - Flatten inherited properties
                         *  4 - Clone symbols
                         * @param {Function} [customizer] The function to customize cloning.
                         * @param {string} [key] The key of `value`.
                         * @param {Object} [object] The parent object of `value`.
                         * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
                         * @returns {*} Returns the cloned value.
                         */
                        function baseClone(value, bitmask, customizer, key, object, stack) {
                            var result,
                                isDeep = bitmask & CLONE_DEEP_FLAG,
                                isFlat = bitmask & CLONE_FLAT_FLAG,
                                isFull = bitmask & CLONE_SYMBOLS_FLAG;

                            if (customizer) {
                                result = object ? customizer(value, key, object, stack) : customizer(value);
                            }
                            if (result !== undefined) {
                                return result;
                            }
                            if (!isObject(value)) {
                                return value;
                            }
                            var isArr = isArray(value);
                            if (isArr) {
                                result = initCloneArray(value);
                                if (!isDeep) {
                                    return copyArray(value, result);
                                }
                            } else {
                                var tag = getTag(value),
                                    isFunc = tag == funcTag || tag == genTag;

                                if (isBuffer(value)) {
                                    return cloneBuffer(value, isDeep);
                                }
                                if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
                                    result = (isFlat || isFunc) ? {} : initCloneObject(value);
                                    if (!isDeep) {
                                        return isFlat
                                            ? copySymbolsIn(value, baseAssignIn(result, value))
                                            : copySymbols(value, baseAssign(result, value));
                                    }
                                } else {
                                    if (!cloneableTags[tag]) {
                                        return object ? value : {};
                                    }
                                    result = initCloneByTag(value, tag, isDeep);
                                }
                            }
                            // Check for circular references and return its corresponding clone.
                            stack || (stack = new Stack);
                            var stacked = stack.get(value);
                            if (stacked) {
                                return stacked;
                            }
                            stack.set(value, result);

                            if (isSet(value)) {
                                value.forEach(function (subValue) {
                                    result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
                                });
                            } else if (isMap(value)) {
                                value.forEach(function (subValue, key) {
                                    result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
                                });
                            }

                            var keysFunc = isFull
                                ? (isFlat ? getAllKeysIn : getAllKeys)
                                : (isFlat ? keysIn : keys);

                            var props = isArr ? undefined : keysFunc(value);
                            arrayEach(props || value, function (subValue, key) {
                                if (props) {
                                    key = subValue;
                                    subValue = value[key];
                                }
                                // Recursively populate clone (susceptible to call stack limits).
                                assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
                            });
                            return result;
                        }

                        /**
                         * The base implementation of `_.conforms` which doesn't clone `source`.
                         *
                         * @private
                         * @param {Object} source The object of property predicates to conform to.
                         * @returns {Function} Returns the new spec function.
                         */
                        function baseConforms(source) {
                            var props = keys(source);
                            return function (object) {
                                return baseConformsTo(object, source, props);
                            };
                        }

                        /**
                         * The base implementation of `_.conformsTo` which accepts `props` to check.
                         *
                         * @private
                         * @param {Object} object The object to inspect.
                         * @param {Object} source The object of property predicates to conform to.
                         * @returns {boolean} Returns `true` if `object` conforms, else `false`.
                         */
                        function baseConformsTo(object, source, props) {
                            var length = props.length;
                            if (object == null) {
                                return !length;
                            }
                            object = Object(object);
                            while (length--) {
                                var key = props[length],
                                    predicate = source[key],
                                    value = object[key];

                                if ((value === undefined && !(key in object)) || !predicate(value)) {
                                    return false;
                                }
                            }
                            return true;
                        }

                        /**
                         * The base implementation of `_.delay` and `_.defer` which accepts `args`
                         * to provide to `func`.
                         *
                         * @private
                         * @param {Function} func The function to delay.
                         * @param {number} wait The number of milliseconds to delay invocation.
                         * @param {Array} args The arguments to provide to `func`.
                         * @returns {number|Object} Returns the timer id or timeout object.
                         */
                        function baseDelay(func, wait, args) {
                            if (typeof func != 'function') {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            return setTimeout(function () {
                                func.apply(undefined, args);
                            }, wait);
                        }

                        /**
                         * The base implementation of methods like `_.difference` without support
                         * for excluding multiple arrays or iteratee shorthands.
                         *
                         * @private
                         * @param {Array} array The array to inspect.
                         * @param {Array} values The values to exclude.
                         * @param {Function} [iteratee] The iteratee invoked per element.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns the new array of filtered values.
                         */
                        function baseDifference(array, values, iteratee, comparator) {
                            var index = -1,
                                includes = arrayIncludes,
                                isCommon = true,
                                length = array.length,
                                result = [],
                                valuesLength = values.length;

                            if (!length) {
                                return result;
                            }
                            if (iteratee) {
                                values = arrayMap(values, baseUnary(iteratee));
                            }
                            if (comparator) {
                                includes = arrayIncludesWith;
                                isCommon = false;
                            } else if (values.length >= LARGE_ARRAY_SIZE) {
                                includes = cacheHas;
                                isCommon = false;
                                values = new SetCache(values);
                            }
                            outer:
                                while (++index < length) {
                                    var value = array[index],
                                        computed = iteratee == null ? value : iteratee(value);

                                    value = (comparator || value !== 0) ? value : 0;
                                    if (isCommon && computed === computed) {
                                        var valuesIndex = valuesLength;
                                        while (valuesIndex--) {
                                            if (values[valuesIndex] === computed) {
                                                continue outer;
                                            }
                                        }
                                        result.push(value);
                                    } else if (!includes(values, computed, comparator)) {
                                        result.push(value);
                                    }
                                }
                            return result;
                        }

                        /**
                         * The base implementation of `_.forEach` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} iteratee The function invoked per iteration.
                         * @returns {Array|Object} Returns `collection`.
                         */
                        var baseEach = createBaseEach(baseForOwn);

                        /**
                         * The base implementation of `_.forEachRight` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} iteratee The function invoked per iteration.
                         * @returns {Array|Object} Returns `collection`.
                         */
                        var baseEachRight = createBaseEach(baseForOwnRight, true);

                        /**
                         * The base implementation of `_.every` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} predicate The function invoked per iteration.
                         * @returns {boolean} Returns `true` if all elements pass the predicate check,
                         *  else `false`
                         */
                        function baseEvery(collection, predicate) {
                            var result = true;
                            baseEach(collection, function (value, index, collection) {
                                result = !!predicate(value, index, collection);
                                return result;
                            });
                            return result;
                        }

                        /**
                         * The base implementation of methods like `_.max` and `_.min` which accepts a
                         * `comparator` to determine the extremum value.
                         *
                         * @private
                         * @param {Array} array The array to iterate over.
                         * @param {Function} iteratee The iteratee invoked per iteration.
                         * @param {Function} comparator The comparator used to compare values.
                         * @returns {*} Returns the extremum value.
                         */
                        function baseExtremum(array, iteratee, comparator) {
                            var index = -1,
                                length = array.length;

                            while (++index < length) {
                                var value = array[index],
                                    current = iteratee(value);

                                if (current != null && (computed === undefined
                                        ? (current === current && !isSymbol(current))
                                        : comparator(current, computed)
                                )) {
                                    var computed = current,
                                        result = value;
                                }
                            }
                            return result;
                        }

                        /**
                         * The base implementation of `_.fill` without an iteratee call guard.
                         *
                         * @private
                         * @param {Array} array The array to fill.
                         * @param {*} value The value to fill `array` with.
                         * @param {number} [start=0] The start position.
                         * @param {number} [end=array.length] The end position.
                         * @returns {Array} Returns `array`.
                         */
                        function baseFill(array, value, start, end) {
                            var length = array.length;

                            start = toInteger(start);
                            if (start < 0) {
                                start = -start > length ? 0 : (length + start);
                            }
                            end = (end === undefined || end > length) ? length : toInteger(end);
                            if (end < 0) {
                                end += length;
                            }
                            end = start > end ? 0 : toLength(end);
                            while (start < end) {
                                array[start++] = value;
                            }
                            return array;
                        }

                        /**
                         * The base implementation of `_.filter` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} predicate The function invoked per iteration.
                         * @returns {Array} Returns the new filtered array.
                         */
                        function baseFilter(collection, predicate) {
                            var result = [];
                            baseEach(collection, function (value, index, collection) {
                                if (predicate(value, index, collection)) {
                                    result.push(value);
                                }
                            });
                            return result;
                        }

                        /**
                         * The base implementation of `_.flatten` with support for restricting flattening.
                         *
                         * @private
                         * @param {Array} array The array to flatten.
                         * @param {number} depth The maximum recursion depth.
                         * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
                         * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
                         * @param {Array} [result=[]] The initial result value.
                         * @returns {Array} Returns the new flattened array.
                         */
                        function baseFlatten(array, depth, predicate, isStrict, result) {
                            var index = -1,
                                length = array.length;

                            predicate || (predicate = isFlattenable);
                            result || (result = []);

                            while (++index < length) {
                                var value = array[index];
                                if (depth > 0 && predicate(value)) {
                                    if (depth > 1) {
                                        // Recursively flatten arrays (susceptible to call stack limits).
                                        baseFlatten(value, depth - 1, predicate, isStrict, result);
                                    } else {
                                        arrayPush(result, value);
                                    }
                                } else if (!isStrict) {
                                    result[result.length] = value;
                                }
                            }
                            return result;
                        }

                        /**
                         * The base implementation of `baseForOwn` which iterates over `object`
                         * properties returned by `keysFunc` and invokes `iteratee` for each property.
                         * Iteratee functions may exit iteration early by explicitly returning `false`.
                         *
                         * @private
                         * @param {Object} object The object to iterate over.
                         * @param {Function} iteratee The function invoked per iteration.
                         * @param {Function} keysFunc The function to get the keys of `object`.
                         * @returns {Object} Returns `object`.
                         */
                        var baseFor = createBaseFor();

                        /**
                         * This function is like `baseFor` except that it iterates over properties
                         * in the opposite order.
                         *
                         * @private
                         * @param {Object} object The object to iterate over.
                         * @param {Function} iteratee The function invoked per iteration.
                         * @param {Function} keysFunc The function to get the keys of `object`.
                         * @returns {Object} Returns `object`.
                         */
                        var baseForRight = createBaseFor(true);

                        /**
                         * The base implementation of `_.forOwn` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Object} object The object to iterate over.
                         * @param {Function} iteratee The function invoked per iteration.
                         * @returns {Object} Returns `object`.
                         */
                        function baseForOwn(object, iteratee) {
                            return object && baseFor(object, iteratee, keys);
                        }

                        /**
                         * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Object} object The object to iterate over.
                         * @param {Function} iteratee The function invoked per iteration.
                         * @returns {Object} Returns `object`.
                         */
                        function baseForOwnRight(object, iteratee) {
                            return object && baseForRight(object, iteratee, keys);
                        }

                        /**
                         * The base implementation of `_.functions` which creates an array of
                         * `object` function property names filtered from `props`.
                         *
                         * @private
                         * @param {Object} object The object to inspect.
                         * @param {Array} props The property names to filter.
                         * @returns {Array} Returns the function names.
                         */
                        function baseFunctions(object, props) {
                            return arrayFilter(props, function (key) {
                                return isFunction(object[key]);
                            });
                        }

                        /**
                         * The base implementation of `_.get` without support for default values.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @param {Array|string} path The path of the property to get.
                         * @returns {*} Returns the resolved value.
                         */
                        function baseGet(object, path) {
                            path = castPath(path, object);

                            var index = 0,
                                length = path.length;

                            while (object != null && index < length) {
                                object = object[toKey(path[index++])];
                            }
                            return (index && index == length) ? object : undefined;
                        }

                        /**
                         * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
                         * `keysFunc` and `symbolsFunc` to get the enumerable property names and
                         * symbols of `object`.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @param {Function} keysFunc The function to get the keys of `object`.
                         * @param {Function} symbolsFunc The function to get the symbols of `object`.
                         * @returns {Array} Returns the array of property names and symbols.
                         */
                        function baseGetAllKeys(object, keysFunc, symbolsFunc) {
                            var result = keysFunc(object);
                            return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
                        }

                        /**
                         * The base implementation of `getTag` without fallbacks for buggy environments.
                         *
                         * @private
                         * @param {*} value The value to query.
                         * @returns {string} Returns the `toStringTag`.
                         */
                        function baseGetTag(value) {
                            if (value == null) {
                                return value === undefined ? undefinedTag : nullTag;
                            }
                            return (symToStringTag && symToStringTag in Object(value))
                                ? getRawTag(value)
                                : objectToString(value);
                        }

                        /**
                         * The base implementation of `_.gt` which doesn't coerce arguments.
                         *
                         * @private
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @returns {boolean} Returns `true` if `value` is greater than `other`,
                         *  else `false`.
                         */
                        function baseGt(value, other) {
                            return value > other;
                        }

                        /**
                         * The base implementation of `_.has` without support for deep paths.
                         *
                         * @private
                         * @param {Object} [object] The object to query.
                         * @param {Array|string} key The key to check.
                         * @returns {boolean} Returns `true` if `key` exists, else `false`.
                         */
                        function baseHas(object, key) {
                            return object != null && hasOwnProperty.call(object, key);
                        }

                        /**
                         * The base implementation of `_.hasIn` without support for deep paths.
                         *
                         * @private
                         * @param {Object} [object] The object to query.
                         * @param {Array|string} key The key to check.
                         * @returns {boolean} Returns `true` if `key` exists, else `false`.
                         */
                        function baseHasIn(object, key) {
                            return object != null && key in Object(object);
                        }

                        /**
                         * The base implementation of `_.inRange` which doesn't coerce arguments.
                         *
                         * @private
                         * @param {number} number The number to check.
                         * @param {number} start The start of the range.
                         * @param {number} end The end of the range.
                         * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
                         */
                        function baseInRange(number, start, end) {
                            return number >= nativeMin(start, end) && number < nativeMax(start, end);
                        }

                        /**
                         * The base implementation of methods like `_.intersection`, without support
                         * for iteratee shorthands, that accepts an array of arrays to inspect.
                         *
                         * @private
                         * @param {Array} arrays The arrays to inspect.
                         * @param {Function} [iteratee] The iteratee invoked per element.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns the new array of shared values.
                         */
                        function baseIntersection(arrays, iteratee, comparator) {
                            var includes = comparator ? arrayIncludesWith : arrayIncludes,
                                length = arrays[0].length,
                                othLength = arrays.length,
                                othIndex = othLength,
                                caches = Array(othLength),
                                maxLength = Infinity,
                                result = [];

                            while (othIndex--) {
                                var array = arrays[othIndex];
                                if (othIndex && iteratee) {
                                    array = arrayMap(array, baseUnary(iteratee));
                                }
                                maxLength = nativeMin(array.length, maxLength);
                                caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
                                    ? new SetCache(othIndex && array)
                                    : undefined;
                            }
                            array = arrays[0];

                            var index = -1,
                                seen = caches[0];

                            outer:
                                while (++index < length && result.length < maxLength) {
                                    var value = array[index],
                                        computed = iteratee ? iteratee(value) : value;

                                    value = (comparator || value !== 0) ? value : 0;
                                    if (!(seen
                                            ? cacheHas(seen, computed)
                                            : includes(result, computed, comparator)
                                    )) {
                                        othIndex = othLength;
                                        while (--othIndex) {
                                            var cache = caches[othIndex];
                                            if (!(cache
                                                ? cacheHas(cache, computed)
                                                : includes(arrays[othIndex], computed, comparator))
                                            ) {
                                                continue outer;
                                            }
                                        }
                                        if (seen) {
                                            seen.push(computed);
                                        }
                                        result.push(value);
                                    }
                                }
                            return result;
                        }

                        /**
                         * The base implementation of `_.invert` and `_.invertBy` which inverts
                         * `object` with values transformed by `iteratee` and set by `setter`.
                         *
                         * @private
                         * @param {Object} object The object to iterate over.
                         * @param {Function} setter The function to set `accumulator` values.
                         * @param {Function} iteratee The iteratee to transform values.
                         * @param {Object} accumulator The initial inverted object.
                         * @returns {Function} Returns `accumulator`.
                         */
                        function baseInverter(object, setter, iteratee, accumulator) {
                            baseForOwn(object, function (value, key, object) {
                                setter(accumulator, iteratee(value), key, object);
                            });
                            return accumulator;
                        }

                        /**
                         * The base implementation of `_.invoke` without support for individual
                         * method arguments.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @param {Array|string} path The path of the method to invoke.
                         * @param {Array} args The arguments to invoke the method with.
                         * @returns {*} Returns the result of the invoked method.
                         */
                        function baseInvoke(object, path, args) {
                            path = castPath(path, object);
                            object = parent(object, path);
                            var func = object == null ? object : object[toKey(last(path))];
                            return func == null ? undefined : apply(func, object, args);
                        }

                        /**
                         * The base implementation of `_.isArguments`.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is an `arguments` object,
                         */
                        function baseIsArguments(value) {
                            return isObjectLike(value) && baseGetTag(value) == argsTag;
                        }

                        /**
                         * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
                         */
                        function baseIsArrayBuffer(value) {
                            return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
                        }

                        /**
                         * The base implementation of `_.isDate` without Node.js optimizations.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
                         */
                        function baseIsDate(value) {
                            return isObjectLike(value) && baseGetTag(value) == dateTag;
                        }

                        /**
                         * The base implementation of `_.isEqual` which supports partial comparisons
                         * and tracks traversed objects.
                         *
                         * @private
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @param {boolean} bitmask The bitmask flags.
                         *  1 - Unordered comparison
                         *  2 - Partial comparison
                         * @param {Function} [customizer] The function to customize comparisons.
                         * @param {Object} [stack] Tracks traversed `value` and `other` objects.
                         * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
                         */
                        function baseIsEqual(value, other, bitmask, customizer, stack) {
                            if (value === other) {
                                return true;
                            }
                            if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
                                return value !== value && other !== other;
                            }
                            return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
                        }

                        /**
                         * A specialized version of `baseIsEqual` for arrays and objects which performs
                         * deep comparisons and tracks traversed objects enabling objects with circular
                         * references to be compared.
                         *
                         * @private
                         * @param {Object} object The object to compare.
                         * @param {Object} other The other object to compare.
                         * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
                         * @param {Function} customizer The function to customize comparisons.
                         * @param {Function} equalFunc The function to determine equivalents of values.
                         * @param {Object} [stack] Tracks traversed `object` and `other` objects.
                         * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
                         */
                        function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
                            var objIsArr = isArray(object),
                                othIsArr = isArray(other),
                                objTag = objIsArr ? arrayTag : getTag(object),
                                othTag = othIsArr ? arrayTag : getTag(other);

                            objTag = objTag == argsTag ? objectTag : objTag;
                            othTag = othTag == argsTag ? objectTag : othTag;

                            var objIsObj = objTag == objectTag,
                                othIsObj = othTag == objectTag,
                                isSameTag = objTag == othTag;

                            if (isSameTag && isBuffer(object)) {
                                if (!isBuffer(other)) {
                                    return false;
                                }
                                objIsArr = true;
                                objIsObj = false;
                            }
                            if (isSameTag && !objIsObj) {
                                stack || (stack = new Stack);
                                return (objIsArr || isTypedArray(object))
                                    ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
                                    : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
                            }
                            if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
                                var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
                                    othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

                                if (objIsWrapped || othIsWrapped) {
                                    var objUnwrapped = objIsWrapped ? object.value() : object,
                                        othUnwrapped = othIsWrapped ? other.value() : other;

                                    stack || (stack = new Stack);
                                    return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
                                }
                            }
                            if (!isSameTag) {
                                return false;
                            }
                            stack || (stack = new Stack);
                            return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
                        }

                        /**
                         * The base implementation of `_.isMap` without Node.js optimizations.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a map, else `false`.
                         */
                        function baseIsMap(value) {
                            return isObjectLike(value) && getTag(value) == mapTag;
                        }

                        /**
                         * The base implementation of `_.isMatch` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Object} object The object to inspect.
                         * @param {Object} source The object of property values to match.
                         * @param {Array} matchData The property names, values, and compare flags to match.
                         * @param {Function} [customizer] The function to customize comparisons.
                         * @returns {boolean} Returns `true` if `object` is a match, else `false`.
                         */
                        function baseIsMatch(object, source, matchData, customizer) {
                            var index = matchData.length,
                                length = index,
                                noCustomizer = !customizer;

                            if (object == null) {
                                return !length;
                            }
                            object = Object(object);
                            while (index--) {
                                var data = matchData[index];
                                if ((noCustomizer && data[2])
                                    ? data[1] !== object[data[0]]
                                    : !(data[0] in object)
                                ) {
                                    return false;
                                }
                            }
                            while (++index < length) {
                                data = matchData[index];
                                var key = data[0],
                                    objValue = object[key],
                                    srcValue = data[1];

                                if (noCustomizer && data[2]) {
                                    if (objValue === undefined && !(key in object)) {
                                        return false;
                                    }
                                } else {
                                    var stack = new Stack;
                                    if (customizer) {
                                        var result = customizer(objValue, srcValue, key, object, source, stack);
                                    }
                                    if (!(result === undefined
                                            ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
                                            : result
                                    )) {
                                        return false;
                                    }
                                }
                            }
                            return true;
                        }

                        /**
                         * The base implementation of `_.isNative` without bad shim checks.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a native function,
                         *  else `false`.
                         */
                        function baseIsNative(value) {
                            if (!isObject(value) || isMasked(value)) {
                                return false;
                            }
                            var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
                            return pattern.test(toSource(value));
                        }

                        /**
                         * The base implementation of `_.isRegExp` without Node.js optimizations.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
                         */
                        function baseIsRegExp(value) {
                            return isObjectLike(value) && baseGetTag(value) == regexpTag;
                        }

                        /**
                         * The base implementation of `_.isSet` without Node.js optimizations.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a set, else `false`.
                         */
                        function baseIsSet(value) {
                            return isObjectLike(value) && getTag(value) == setTag;
                        }

                        /**
                         * The base implementation of `_.isTypedArray` without Node.js optimizations.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
                         */
                        function baseIsTypedArray(value) {
                            return isObjectLike(value) &&
                                isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
                        }

                        /**
                         * The base implementation of `_.iteratee`.
                         *
                         * @private
                         * @param {*} [value=_.identity] The value to convert to an iteratee.
                         * @returns {Function} Returns the iteratee.
                         */
                        function baseIteratee(value) {
                            // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
                            // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
                            if (typeof value == 'function') {
                                return value;
                            }
                            if (value == null) {
                                return identity;
                            }
                            if (typeof value == 'object') {
                                return isArray(value)
                                    ? baseMatchesProperty(value[0], value[1])
                                    : baseMatches(value);
                            }
                            return property(value);
                        }

                        /**
                         * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of property names.
                         */
                        function baseKeys(object) {
                            if (!isPrototype(object)) {
                                return nativeKeys(object);
                            }
                            var result = [];
                            for (var key in Object(object)) {
                                if (hasOwnProperty.call(object, key) && key != 'constructor') {
                                    result.push(key);
                                }
                            }
                            return result;
                        }

                        /**
                         * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of property names.
                         */
                        function baseKeysIn(object) {
                            if (!isObject(object)) {
                                return nativeKeysIn(object);
                            }
                            var isProto = isPrototype(object),
                                result = [];

                            for (var key in object) {
                                if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
                                    result.push(key);
                                }
                            }
                            return result;
                        }

                        /**
                         * The base implementation of `_.lt` which doesn't coerce arguments.
                         *
                         * @private
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @returns {boolean} Returns `true` if `value` is less than `other`,
                         *  else `false`.
                         */
                        function baseLt(value, other) {
                            return value < other;
                        }

                        /**
                         * The base implementation of `_.map` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} iteratee The function invoked per iteration.
                         * @returns {Array} Returns the new mapped array.
                         */
                        function baseMap(collection, iteratee) {
                            var index = -1,
                                result = isArrayLike(collection) ? Array(collection.length) : [];

                            baseEach(collection, function (value, key, collection) {
                                result[++index] = iteratee(value, key, collection);
                            });
                            return result;
                        }

                        /**
                         * The base implementation of `_.matches` which doesn't clone `source`.
                         *
                         * @private
                         * @param {Object} source The object of property values to match.
                         * @returns {Function} Returns the new spec function.
                         */
                        function baseMatches(source) {
                            var matchData = getMatchData(source);
                            if (matchData.length == 1 && matchData[0][2]) {
                                return matchesStrictComparable(matchData[0][0], matchData[0][1]);
                            }
                            return function (object) {
                                return object === source || baseIsMatch(object, source, matchData);
                            };
                        }

                        /**
                         * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
                         *
                         * @private
                         * @param {string} path The path of the property to get.
                         * @param {*} srcValue The value to match.
                         * @returns {Function} Returns the new spec function.
                         */
                        function baseMatchesProperty(path, srcValue) {
                            if (isKey(path) && isStrictComparable(srcValue)) {
                                return matchesStrictComparable(toKey(path), srcValue);
                            }
                            return function (object) {
                                var objValue = get(object, path);
                                return (objValue === undefined && objValue === srcValue)
                                    ? hasIn(object, path)
                                    : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
                            };
                        }

                        /**
                         * The base implementation of `_.merge` without support for multiple sources.
                         *
                         * @private
                         * @param {Object} object The destination object.
                         * @param {Object} source The source object.
                         * @param {number} srcIndex The index of `source`.
                         * @param {Function} [customizer] The function to customize merged values.
                         * @param {Object} [stack] Tracks traversed source values and their merged
                         *  counterparts.
                         */
                        function baseMerge(object, source, srcIndex, customizer, stack) {
                            if (object === source) {
                                return;
                            }
                            baseFor(source, function (srcValue, key) {
                                stack || (stack = new Stack);
                                if (isObject(srcValue)) {
                                    baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
                                } else {
                                    var newValue = customizer
                                        ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
                                        : undefined;

                                    if (newValue === undefined) {
                                        newValue = srcValue;
                                    }
                                    assignMergeValue(object, key, newValue);
                                }
                            }, keysIn);
                        }

                        /**
                         * A specialized version of `baseMerge` for arrays and objects which performs
                         * deep merges and tracks traversed objects enabling objects with circular
                         * references to be merged.
                         *
                         * @private
                         * @param {Object} object The destination object.
                         * @param {Object} source The source object.
                         * @param {string} key The key of the value to merge.
                         * @param {number} srcIndex The index of `source`.
                         * @param {Function} mergeFunc The function to merge values.
                         * @param {Function} [customizer] The function to customize assigned values.
                         * @param {Object} [stack] Tracks traversed source values and their merged
                         *  counterparts.
                         */
                        function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
                            var objValue = safeGet(object, key),
                                srcValue = safeGet(source, key),
                                stacked = stack.get(srcValue);

                            if (stacked) {
                                assignMergeValue(object, key, stacked);
                                return;
                            }
                            var newValue = customizer
                                ? customizer(objValue, srcValue, (key + ''), object, source, stack)
                                : undefined;

                            var isCommon = newValue === undefined;

                            if (isCommon) {
                                var isArr = isArray(srcValue),
                                    isBuff = !isArr && isBuffer(srcValue),
                                    isTyped = !isArr && !isBuff && isTypedArray(srcValue);

                                newValue = srcValue;
                                if (isArr || isBuff || isTyped) {
                                    if (isArray(objValue)) {
                                        newValue = objValue;
                                    } else if (isArrayLikeObject(objValue)) {
                                        newValue = copyArray(objValue);
                                    } else if (isBuff) {
                                        isCommon = false;
                                        newValue = cloneBuffer(srcValue, true);
                                    } else if (isTyped) {
                                        isCommon = false;
                                        newValue = cloneTypedArray(srcValue, true);
                                    } else {
                                        newValue = [];
                                    }
                                } else if (isPlainObject(srcValue) || isArguments(srcValue)) {
                                    newValue = objValue;
                                    if (isArguments(objValue)) {
                                        newValue = toPlainObject(objValue);
                                    } else if (!isObject(objValue) || isFunction(objValue)) {
                                        newValue = initCloneObject(srcValue);
                                    }
                                } else {
                                    isCommon = false;
                                }
                            }
                            if (isCommon) {
                                // Recursively merge objects and arrays (susceptible to call stack limits).
                                stack.set(srcValue, newValue);
                                mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
                                stack['delete'](srcValue);
                            }
                            assignMergeValue(object, key, newValue);
                        }

                        /**
                         * The base implementation of `_.nth` which doesn't coerce arguments.
                         *
                         * @private
                         * @param {Array} array The array to query.
                         * @param {number} n The index of the element to return.
                         * @returns {*} Returns the nth element of `array`.
                         */
                        function baseNth(array, n) {
                            var length = array.length;
                            if (!length) {
                                return;
                            }
                            n += n < 0 ? length : 0;
                            return isIndex(n, length) ? array[n] : undefined;
                        }

                        /**
                         * The base implementation of `_.orderBy` without param guards.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
                         * @param {string[]} orders The sort orders of `iteratees`.
                         * @returns {Array} Returns the new sorted array.
                         */
                        function baseOrderBy(collection, iteratees, orders) {
                            if (iteratees.length) {
                                iteratees = arrayMap(iteratees, function (iteratee) {
                                    if (isArray(iteratee)) {
                                        return function (value) {
                                            return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);
                                        }
                                    }
                                    return iteratee;
                                });
                            } else {
                                iteratees = [identity];
                            }

                            var index = -1;
                            iteratees = arrayMap(iteratees, baseUnary(getIteratee()));

                            var result = baseMap(collection, function (value, key, collection) {
                                var criteria = arrayMap(iteratees, function (iteratee) {
                                    return iteratee(value);
                                });
                                return {'criteria': criteria, 'index': ++index, 'value': value};
                            });

                            return baseSortBy(result, function (object, other) {
                                return compareMultiple(object, other, orders);
                            });
                        }

                        /**
                         * The base implementation of `_.pick` without support for individual
                         * property identifiers.
                         *
                         * @private
                         * @param {Object} object The source object.
                         * @param {string[]} paths The property paths to pick.
                         * @returns {Object} Returns the new object.
                         */
                        function basePick(object, paths) {
                            return basePickBy(object, paths, function (value, path) {
                                return hasIn(object, path);
                            });
                        }

                        /**
                         * The base implementation of  `_.pickBy` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Object} object The source object.
                         * @param {string[]} paths The property paths to pick.
                         * @param {Function} predicate The function invoked per property.
                         * @returns {Object} Returns the new object.
                         */
                        function basePickBy(object, paths, predicate) {
                            var index = -1,
                                length = paths.length,
                                result = {};

                            while (++index < length) {
                                var path = paths[index],
                                    value = baseGet(object, path);

                                if (predicate(value, path)) {
                                    baseSet(result, castPath(path, object), value);
                                }
                            }
                            return result;
                        }

                        /**
                         * A specialized version of `baseProperty` which supports deep paths.
                         *
                         * @private
                         * @param {Array|string} path The path of the property to get.
                         * @returns {Function} Returns the new accessor function.
                         */
                        function basePropertyDeep(path) {
                            return function (object) {
                                return baseGet(object, path);
                            };
                        }

                        /**
                         * The base implementation of `_.pullAllBy` without support for iteratee
                         * shorthands.
                         *
                         * @private
                         * @param {Array} array The array to modify.
                         * @param {Array} values The values to remove.
                         * @param {Function} [iteratee] The iteratee invoked per element.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns `array`.
                         */
                        function basePullAll(array, values, iteratee, comparator) {
                            var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
                                index = -1,
                                length = values.length,
                                seen = array;

                            if (array === values) {
                                values = copyArray(values);
                            }
                            if (iteratee) {
                                seen = arrayMap(array, baseUnary(iteratee));
                            }
                            while (++index < length) {
                                var fromIndex = 0,
                                    value = values[index],
                                    computed = iteratee ? iteratee(value) : value;

                                while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
                                    if (seen !== array) {
                                        splice.call(seen, fromIndex, 1);
                                    }
                                    splice.call(array, fromIndex, 1);
                                }
                            }
                            return array;
                        }

                        /**
                         * The base implementation of `_.pullAt` without support for individual
                         * indexes or capturing the removed elements.
                         *
                         * @private
                         * @param {Array} array The array to modify.
                         * @param {number[]} indexes The indexes of elements to remove.
                         * @returns {Array} Returns `array`.
                         */
                        function basePullAt(array, indexes) {
                            var length = array ? indexes.length : 0,
                                lastIndex = length - 1;

                            while (length--) {
                                var index = indexes[length];
                                if (length == lastIndex || index !== previous) {
                                    var previous = index;
                                    if (isIndex(index)) {
                                        splice.call(array, index, 1);
                                    } else {
                                        baseUnset(array, index);
                                    }
                                }
                            }
                            return array;
                        }

                        /**
                         * The base implementation of `_.random` without support for returning
                         * floating-point numbers.
                         *
                         * @private
                         * @param {number} lower The lower bound.
                         * @param {number} upper The upper bound.
                         * @returns {number} Returns the random number.
                         */
                        function baseRandom(lower, upper) {
                            return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
                        }

                        /**
                         * The base implementation of `_.range` and `_.rangeRight` which doesn't
                         * coerce arguments.
                         *
                         * @private
                         * @param {number} start The start of the range.
                         * @param {number} end The end of the range.
                         * @param {number} step The value to increment or decrement by.
                         * @param {boolean} [fromRight] Specify iterating from right to left.
                         * @returns {Array} Returns the range of numbers.
                         */
                        function baseRange(start, end, step, fromRight) {
                            var index = -1,
                                length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
                                result = Array(length);

                            while (length--) {
                                result[fromRight ? length : ++index] = start;
                                start += step;
                            }
                            return result;
                        }

                        /**
                         * The base implementation of `_.repeat` which doesn't coerce arguments.
                         *
                         * @private
                         * @param {string} string The string to repeat.
                         * @param {number} n The number of times to repeat the string.
                         * @returns {string} Returns the repeated string.
                         */
                        function baseRepeat(string, n) {
                            var result = '';
                            if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
                                return result;
                            }
                            // Leverage the exponentiation by squaring algorithm for a faster repeat.
                            // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
                            do {
                                if (n % 2) {
                                    result += string;
                                }
                                n = nativeFloor(n / 2);
                                if (n) {
                                    string += string;
                                }
                            } while (n);

                            return result;
                        }

                        /**
                         * The base implementation of `_.rest` which doesn't validate or coerce arguments.
                         *
                         * @private
                         * @param {Function} func The function to apply a rest parameter to.
                         * @param {number} [start=func.length-1] The start position of the rest parameter.
                         * @returns {Function} Returns the new function.
                         */
                        function baseRest(func, start) {
                            return setToString(overRest(func, start, identity), func + '');
                        }

                        /**
                         * The base implementation of `_.sample`.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to sample.
                         * @returns {*} Returns the random element.
                         */
                        function baseSample(collection) {
                            return arraySample(values(collection));
                        }

                        /**
                         * The base implementation of `_.sampleSize` without param guards.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to sample.
                         * @param {number} n The number of elements to sample.
                         * @returns {Array} Returns the random elements.
                         */
                        function baseSampleSize(collection, n) {
                            var array = values(collection);
                            return shuffleSelf(array, baseClamp(n, 0, array.length));
                        }

                        /**
                         * The base implementation of `_.set`.
                         *
                         * @private
                         * @param {Object} object The object to modify.
                         * @param {Array|string} path The path of the property to set.
                         * @param {*} value The value to set.
                         * @param {Function} [customizer] The function to customize path creation.
                         * @returns {Object} Returns `object`.
                         */
                        function baseSet(object, path, value, customizer) {
                            if (!isObject(object)) {
                                return object;
                            }
                            path = castPath(path, object);

                            var index = -1,
                                length = path.length,
                                lastIndex = length - 1,
                                nested = object;

                            while (nested != null && ++index < length) {
                                var key = toKey(path[index]),
                                    newValue = value;

                                if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
                                    return object;
                                }

                                if (index != lastIndex) {
                                    var objValue = nested[key];
                                    newValue = customizer ? customizer(objValue, key, nested) : undefined;
                                    if (newValue === undefined) {
                                        newValue = isObject(objValue)
                                            ? objValue
                                            : (isIndex(path[index + 1]) ? [] : {});
                                    }
                                }
                                assignValue(nested, key, newValue);
                                nested = nested[key];
                            }
                            return object;
                        }

                        /**
                         * The base implementation of `setData` without support for hot loop shorting.
                         *
                         * @private
                         * @param {Function} func The function to associate metadata with.
                         * @param {*} data The metadata.
                         * @returns {Function} Returns `func`.
                         */
                        var baseSetData = !metaMap ? identity : function (func, data) {
                            metaMap.set(func, data);
                            return func;
                        };

                        /**
                         * The base implementation of `setToString` without support for hot loop shorting.
                         *
                         * @private
                         * @param {Function} func The function to modify.
                         * @param {Function} string The `toString` result.
                         * @returns {Function} Returns `func`.
                         */
                        var baseSetToString = !defineProperty ? identity : function (func, string) {
                            return defineProperty(func, 'toString', {
                                'configurable': true,
                                'enumerable': false,
                                'value': constant(string),
                                'writable': true
                            });
                        };

                        /**
                         * The base implementation of `_.shuffle`.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to shuffle.
                         * @returns {Array} Returns the new shuffled array.
                         */
                        function baseShuffle(collection) {
                            return shuffleSelf(values(collection));
                        }

                        /**
                         * The base implementation of `_.slice` without an iteratee call guard.
                         *
                         * @private
                         * @param {Array} array The array to slice.
                         * @param {number} [start=0] The start position.
                         * @param {number} [end=array.length] The end position.
                         * @returns {Array} Returns the slice of `array`.
                         */
                        function baseSlice(array, start, end) {
                            var index = -1,
                                length = array.length;

                            if (start < 0) {
                                start = -start > length ? 0 : (length + start);
                            }
                            end = end > length ? length : end;
                            if (end < 0) {
                                end += length;
                            }
                            length = start > end ? 0 : ((end - start) >>> 0);
                            start >>>= 0;

                            var result = Array(length);
                            while (++index < length) {
                                result[index] = array[index + start];
                            }
                            return result;
                        }

                        /**
                         * The base implementation of `_.some` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} predicate The function invoked per iteration.
                         * @returns {boolean} Returns `true` if any element passes the predicate check,
                         *  else `false`.
                         */
                        function baseSome(collection, predicate) {
                            var result;

                            baseEach(collection, function (value, index, collection) {
                                result = predicate(value, index, collection);
                                return !result;
                            });
                            return !!result;
                        }

                        /**
                         * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
                         * performs a binary search of `array` to determine the index at which `value`
                         * should be inserted into `array` in order to maintain its sort order.
                         *
                         * @private
                         * @param {Array} array The sorted array to inspect.
                         * @param {*} value The value to evaluate.
                         * @param {boolean} [retHighest] Specify returning the highest qualified index.
                         * @returns {number} Returns the index at which `value` should be inserted
                         *  into `array`.
                         */
                        function baseSortedIndex(array, value, retHighest) {
                            var low = 0,
                                high = array == null ? low : array.length;

                            if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
                                while (low < high) {
                                    var mid = (low + high) >>> 1,
                                        computed = array[mid];

                                    if (computed !== null && !isSymbol(computed) &&
                                        (retHighest ? (computed <= value) : (computed < value))) {
                                        low = mid + 1;
                                    } else {
                                        high = mid;
                                    }
                                }
                                return high;
                            }
                            return baseSortedIndexBy(array, value, identity, retHighest);
                        }

                        /**
                         * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
                         * which invokes `iteratee` for `value` and each element of `array` to compute
                         * their sort ranking. The iteratee is invoked with one argument; (value).
                         *
                         * @private
                         * @param {Array} array The sorted array to inspect.
                         * @param {*} value The value to evaluate.
                         * @param {Function} iteratee The iteratee invoked per element.
                         * @param {boolean} [retHighest] Specify returning the highest qualified index.
                         * @returns {number} Returns the index at which `value` should be inserted
                         *  into `array`.
                         */
                        function baseSortedIndexBy(array, value, iteratee, retHighest) {
                            var low = 0,
                                high = array == null ? 0 : array.length;
                            if (high === 0) {
                                return 0;
                            }

                            value = iteratee(value);
                            var valIsNaN = value !== value,
                                valIsNull = value === null,
                                valIsSymbol = isSymbol(value),
                                valIsUndefined = value === undefined;

                            while (low < high) {
                                var mid = nativeFloor((low + high) / 2),
                                    computed = iteratee(array[mid]),
                                    othIsDefined = computed !== undefined,
                                    othIsNull = computed === null,
                                    othIsReflexive = computed === computed,
                                    othIsSymbol = isSymbol(computed);

                                if (valIsNaN) {
                                    var setLow = retHighest || othIsReflexive;
                                } else if (valIsUndefined) {
                                    setLow = othIsReflexive && (retHighest || othIsDefined);
                                } else if (valIsNull) {
                                    setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
                                } else if (valIsSymbol) {
                                    setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
                                } else if (othIsNull || othIsSymbol) {
                                    setLow = false;
                                } else {
                                    setLow = retHighest ? (computed <= value) : (computed < value);
                                }
                                if (setLow) {
                                    low = mid + 1;
                                } else {
                                    high = mid;
                                }
                            }
                            return nativeMin(high, MAX_ARRAY_INDEX);
                        }

                        /**
                         * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
                         * support for iteratee shorthands.
                         *
                         * @private
                         * @param {Array} array The array to inspect.
                         * @param {Function} [iteratee] The iteratee invoked per element.
                         * @returns {Array} Returns the new duplicate free array.
                         */
                        function baseSortedUniq(array, iteratee) {
                            var index = -1,
                                length = array.length,
                                resIndex = 0,
                                result = [];

                            while (++index < length) {
                                var value = array[index],
                                    computed = iteratee ? iteratee(value) : value;

                                if (!index || !eq(computed, seen)) {
                                    var seen = computed;
                                    result[resIndex++] = value === 0 ? 0 : value;
                                }
                            }
                            return result;
                        }

                        /**
                         * The base implementation of `_.toNumber` which doesn't ensure correct
                         * conversions of binary, hexadecimal, or octal string values.
                         *
                         * @private
                         * @param {*} value The value to process.
                         * @returns {number} Returns the number.
                         */
                        function baseToNumber(value) {
                            if (typeof value == 'number') {
                                return value;
                            }
                            if (isSymbol(value)) {
                                return NAN;
                            }
                            return +value;
                        }

                        /**
                         * The base implementation of `_.toString` which doesn't convert nullish
                         * values to empty strings.
                         *
                         * @private
                         * @param {*} value The value to process.
                         * @returns {string} Returns the string.
                         */
                        function baseToString(value) {
                            // Exit early for strings to avoid a performance hit in some environments.
                            if (typeof value == 'string') {
                                return value;
                            }
                            if (isArray(value)) {
                                // Recursively convert values (susceptible to call stack limits).
                                return arrayMap(value, baseToString) + '';
                            }
                            if (isSymbol(value)) {
                                return symbolToString ? symbolToString.call(value) : '';
                            }
                            var result = (value + '');
                            return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
                        }

                        /**
                         * The base implementation of `_.uniqBy` without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Array} array The array to inspect.
                         * @param {Function} [iteratee] The iteratee invoked per element.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns the new duplicate free array.
                         */
                        function baseUniq(array, iteratee, comparator) {
                            var index = -1,
                                includes = arrayIncludes,
                                length = array.length,
                                isCommon = true,
                                result = [],
                                seen = result;

                            if (comparator) {
                                isCommon = false;
                                includes = arrayIncludesWith;
                            } else if (length >= LARGE_ARRAY_SIZE) {
                                var set = iteratee ? null : createSet(array);
                                if (set) {
                                    return setToArray(set);
                                }
                                isCommon = false;
                                includes = cacheHas;
                                seen = new SetCache;
                            } else {
                                seen = iteratee ? [] : result;
                            }
                            outer:
                                while (++index < length) {
                                    var value = array[index],
                                        computed = iteratee ? iteratee(value) : value;

                                    value = (comparator || value !== 0) ? value : 0;
                                    if (isCommon && computed === computed) {
                                        var seenIndex = seen.length;
                                        while (seenIndex--) {
                                            if (seen[seenIndex] === computed) {
                                                continue outer;
                                            }
                                        }
                                        if (iteratee) {
                                            seen.push(computed);
                                        }
                                        result.push(value);
                                    } else if (!includes(seen, computed, comparator)) {
                                        if (seen !== result) {
                                            seen.push(computed);
                                        }
                                        result.push(value);
                                    }
                                }
                            return result;
                        }

                        /**
                         * The base implementation of `_.unset`.
                         *
                         * @private
                         * @param {Object} object The object to modify.
                         * @param {Array|string} path The property path to unset.
                         * @returns {boolean} Returns `true` if the property is deleted, else `false`.
                         */
                        function baseUnset(object, path) {
                            path = castPath(path, object);
                            object = parent(object, path);
                            return object == null || delete object[toKey(last(path))];
                        }

                        /**
                         * The base implementation of `_.update`.
                         *
                         * @private
                         * @param {Object} object The object to modify.
                         * @param {Array|string} path The path of the property to update.
                         * @param {Function} updater The function to produce the updated value.
                         * @param {Function} [customizer] The function to customize path creation.
                         * @returns {Object} Returns `object`.
                         */
                        function baseUpdate(object, path, updater, customizer) {
                            return baseSet(object, path, updater(baseGet(object, path)), customizer);
                        }

                        /**
                         * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
                         * without support for iteratee shorthands.
                         *
                         * @private
                         * @param {Array} array The array to query.
                         * @param {Function} predicate The function invoked per iteration.
                         * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
                         * @param {boolean} [fromRight] Specify iterating from right to left.
                         * @returns {Array} Returns the slice of `array`.
                         */
                        function baseWhile(array, predicate, isDrop, fromRight) {
                            var length = array.length,
                                index = fromRight ? length : -1;

                            while ((fromRight ? index-- : ++index < length) &&
                            predicate(array[index], index, array)) {
                            }

                            return isDrop
                                ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
                                : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
                        }

                        /**
                         * The base implementation of `wrapperValue` which returns the result of
                         * performing a sequence of actions on the unwrapped `value`, where each
                         * successive action is supplied the return value of the previous.
                         *
                         * @private
                         * @param {*} value The unwrapped value.
                         * @param {Array} actions Actions to perform to resolve the unwrapped value.
                         * @returns {*} Returns the resolved value.
                         */
                        function baseWrapperValue(value, actions) {
                            var result = value;
                            if (result instanceof LazyWrapper) {
                                result = result.value();
                            }
                            return arrayReduce(actions, function (result, action) {
                                return action.func.apply(action.thisArg, arrayPush([result], action.args));
                            }, result);
                        }

                        /**
                         * The base implementation of methods like `_.xor`, without support for
                         * iteratee shorthands, that accepts an array of arrays to inspect.
                         *
                         * @private
                         * @param {Array} arrays The arrays to inspect.
                         * @param {Function} [iteratee] The iteratee invoked per element.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns the new array of values.
                         */
                        function baseXor(arrays, iteratee, comparator) {
                            var length = arrays.length;
                            if (length < 2) {
                                return length ? baseUniq(arrays[0]) : [];
                            }
                            var index = -1,
                                result = Array(length);

                            while (++index < length) {
                                var array = arrays[index],
                                    othIndex = -1;

                                while (++othIndex < length) {
                                    if (othIndex != index) {
                                        result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
                                    }
                                }
                            }
                            return baseUniq(baseFlatten(result, 1), iteratee, comparator);
                        }

                        /**
                         * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
                         *
                         * @private
                         * @param {Array} props The property identifiers.
                         * @param {Array} values The property values.
                         * @param {Function} assignFunc The function to assign values.
                         * @returns {Object} Returns the new object.
                         */
                        function baseZipObject(props, values, assignFunc) {
                            var index = -1,
                                length = props.length,
                                valsLength = values.length,
                                result = {};

                            while (++index < length) {
                                var value = index < valsLength ? values[index] : undefined;
                                assignFunc(result, props[index], value);
                            }
                            return result;
                        }

                        /**
                         * Casts `value` to an empty array if it's not an array like object.
                         *
                         * @private
                         * @param {*} value The value to inspect.
                         * @returns {Array|Object} Returns the cast array-like object.
                         */
                        function castArrayLikeObject(value) {
                            return isArrayLikeObject(value) ? value : [];
                        }

                        /**
                         * Casts `value` to `identity` if it's not a function.
                         *
                         * @private
                         * @param {*} value The value to inspect.
                         * @returns {Function} Returns cast function.
                         */
                        function castFunction(value) {
                            return typeof value == 'function' ? value : identity;
                        }

                        /**
                         * Casts `value` to a path array if it's not one.
                         *
                         * @private
                         * @param {*} value The value to inspect.
                         * @param {Object} [object] The object to query keys on.
                         * @returns {Array} Returns the cast property path array.
                         */
                        function castPath(value, object) {
                            if (isArray(value)) {
                                return value;
                            }
                            return isKey(value, object) ? [value] : stringToPath(toString(value));
                        }

                        /**
                         * A `baseRest` alias which can be replaced with `identity` by module
                         * replacement plugins.
                         *
                         * @private
                         * @type {Function}
                         * @param {Function} func The function to apply a rest parameter to.
                         * @returns {Function} Returns the new function.
                         */
                        var castRest = baseRest;

                        /**
                         * Casts `array` to a slice if it's needed.
                         *
                         * @private
                         * @param {Array} array The array to inspect.
                         * @param {number} start The start position.
                         * @param {number} [end=array.length] The end position.
                         * @returns {Array} Returns the cast slice.
                         */
                        function castSlice(array, start, end) {
                            var length = array.length;
                            end = end === undefined ? length : end;
                            return (!start && end >= length) ? array : baseSlice(array, start, end);
                        }

                        /**
                         * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
                         *
                         * @private
                         * @param {number|Object} id The timer id or timeout object of the timer to clear.
                         */
                        var clearTimeout = ctxClearTimeout || function (id) {
                            return root.clearTimeout(id);
                        };

                        /**
                         * Creates a clone of  `buffer`.
                         *
                         * @private
                         * @param {Buffer} buffer The buffer to clone.
                         * @param {boolean} [isDeep] Specify a deep clone.
                         * @returns {Buffer} Returns the cloned buffer.
                         */
                        function cloneBuffer(buffer, isDeep) {
                            if (isDeep) {
                                return buffer.slice();
                            }
                            var length = buffer.length,
                                result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);

                            buffer.copy(result);
                            return result;
                        }

                        /**
                         * Creates a clone of `arrayBuffer`.
                         *
                         * @private
                         * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
                         * @returns {ArrayBuffer} Returns the cloned array buffer.
                         */
                        function cloneArrayBuffer(arrayBuffer) {
                            var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
                            new Uint8Array(result).set(new Uint8Array(arrayBuffer));
                            return result;
                        }

                        /**
                         * Creates a clone of `dataView`.
                         *
                         * @private
                         * @param {Object} dataView The data view to clone.
                         * @param {boolean} [isDeep] Specify a deep clone.
                         * @returns {Object} Returns the cloned data view.
                         */
                        function cloneDataView(dataView, isDeep) {
                            var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
                            return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
                        }

                        /**
                         * Creates a clone of `regexp`.
                         *
                         * @private
                         * @param {Object} regexp The regexp to clone.
                         * @returns {Object} Returns the cloned regexp.
                         */
                        function cloneRegExp(regexp) {
                            var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
                            result.lastIndex = regexp.lastIndex;
                            return result;
                        }

                        /**
                         * Creates a clone of the `symbol` object.
                         *
                         * @private
                         * @param {Object} symbol The symbol object to clone.
                         * @returns {Object} Returns the cloned symbol object.
                         */
                        function cloneSymbol(symbol) {
                            return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
                        }

                        /**
                         * Creates a clone of `typedArray`.
                         *
                         * @private
                         * @param {Object} typedArray The typed array to clone.
                         * @param {boolean} [isDeep] Specify a deep clone.
                         * @returns {Object} Returns the cloned typed array.
                         */
                        function cloneTypedArray(typedArray, isDeep) {
                            var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
                            return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
                        }

                        /**
                         * Compares values to sort them in ascending order.
                         *
                         * @private
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @returns {number} Returns the sort order indicator for `value`.
                         */
                        function compareAscending(value, other) {
                            if (value !== other) {
                                var valIsDefined = value !== undefined,
                                    valIsNull = value === null,
                                    valIsReflexive = value === value,
                                    valIsSymbol = isSymbol(value);

                                var othIsDefined = other !== undefined,
                                    othIsNull = other === null,
                                    othIsReflexive = other === other,
                                    othIsSymbol = isSymbol(other);

                                if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
                                    (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
                                    (valIsNull && othIsDefined && othIsReflexive) ||
                                    (!valIsDefined && othIsReflexive) ||
                                    !valIsReflexive) {
                                    return 1;
                                }
                                if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
                                    (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
                                    (othIsNull && valIsDefined && valIsReflexive) ||
                                    (!othIsDefined && valIsReflexive) ||
                                    !othIsReflexive) {
                                    return -1;
                                }
                            }
                            return 0;
                        }

                        /**
                         * Used by `_.orderBy` to compare multiple properties of a value to another
                         * and stable sort them.
                         *
                         * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
                         * specify an order of "desc" for descending or "asc" for ascending sort order
                         * of corresponding values.
                         *
                         * @private
                         * @param {Object} object The object to compare.
                         * @param {Object} other The other object to compare.
                         * @param {boolean[]|string[]} orders The order to sort by for each property.
                         * @returns {number} Returns the sort order indicator for `object`.
                         */
                        function compareMultiple(object, other, orders) {
                            var index = -1,
                                objCriteria = object.criteria,
                                othCriteria = other.criteria,
                                length = objCriteria.length,
                                ordersLength = orders.length;

                            while (++index < length) {
                                var result = compareAscending(objCriteria[index], othCriteria[index]);
                                if (result) {
                                    if (index >= ordersLength) {
                                        return result;
                                    }
                                    var order = orders[index];
                                    return result * (order == 'desc' ? -1 : 1);
                                }
                            }
                            // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
                            // that causes it, under certain circumstances, to provide the same value for
                            // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
                            // for more details.
                            //
                            // This also ensures a stable sort in V8 and other engines.
                            // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
                            return object.index - other.index;
                        }

                        /**
                         * Creates an array that is the composition of partially applied arguments,
                         * placeholders, and provided arguments into a single array of arguments.
                         *
                         * @private
                         * @param {Array} args The provided arguments.
                         * @param {Array} partials The arguments to prepend to those provided.
                         * @param {Array} holders The `partials` placeholder indexes.
                         * @params {boolean} [isCurried] Specify composing for a curried function.
                         * @returns {Array} Returns the new array of composed arguments.
                         */
                        function composeArgs(args, partials, holders, isCurried) {
                            var argsIndex = -1,
                                argsLength = args.length,
                                holdersLength = holders.length,
                                leftIndex = -1,
                                leftLength = partials.length,
                                rangeLength = nativeMax(argsLength - holdersLength, 0),
                                result = Array(leftLength + rangeLength),
                                isUncurried = !isCurried;

                            while (++leftIndex < leftLength) {
                                result[leftIndex] = partials[leftIndex];
                            }
                            while (++argsIndex < holdersLength) {
                                if (isUncurried || argsIndex < argsLength) {
                                    result[holders[argsIndex]] = args[argsIndex];
                                }
                            }
                            while (rangeLength--) {
                                result[leftIndex++] = args[argsIndex++];
                            }
                            return result;
                        }

                        /**
                         * This function is like `composeArgs` except that the arguments composition
                         * is tailored for `_.partialRight`.
                         *
                         * @private
                         * @param {Array} args The provided arguments.
                         * @param {Array} partials The arguments to append to those provided.
                         * @param {Array} holders The `partials` placeholder indexes.
                         * @params {boolean} [isCurried] Specify composing for a curried function.
                         * @returns {Array} Returns the new array of composed arguments.
                         */
                        function composeArgsRight(args, partials, holders, isCurried) {
                            var argsIndex = -1,
                                argsLength = args.length,
                                holdersIndex = -1,
                                holdersLength = holders.length,
                                rightIndex = -1,
                                rightLength = partials.length,
                                rangeLength = nativeMax(argsLength - holdersLength, 0),
                                result = Array(rangeLength + rightLength),
                                isUncurried = !isCurried;

                            while (++argsIndex < rangeLength) {
                                result[argsIndex] = args[argsIndex];
                            }
                            var offset = argsIndex;
                            while (++rightIndex < rightLength) {
                                result[offset + rightIndex] = partials[rightIndex];
                            }
                            while (++holdersIndex < holdersLength) {
                                if (isUncurried || argsIndex < argsLength) {
                                    result[offset + holders[holdersIndex]] = args[argsIndex++];
                                }
                            }
                            return result;
                        }

                        /**
                         * Copies the values of `source` to `array`.
                         *
                         * @private
                         * @param {Array} source The array to copy values from.
                         * @param {Array} [array=[]] The array to copy values to.
                         * @returns {Array} Returns `array`.
                         */
                        function copyArray(source, array) {
                            var index = -1,
                                length = source.length;

                            array || (array = Array(length));
                            while (++index < length) {
                                array[index] = source[index];
                            }
                            return array;
                        }

                        /**
                         * Copies properties of `source` to `object`.
                         *
                         * @private
                         * @param {Object} source The object to copy properties from.
                         * @param {Array} props The property identifiers to copy.
                         * @param {Object} [object={}] The object to copy properties to.
                         * @param {Function} [customizer] The function to customize copied values.
                         * @returns {Object} Returns `object`.
                         */
                        function copyObject(source, props, object, customizer) {
                            var isNew = !object;
                            object || (object = {});

                            var index = -1,
                                length = props.length;

                            while (++index < length) {
                                var key = props[index];

                                var newValue = customizer
                                    ? customizer(object[key], source[key], key, object, source)
                                    : undefined;

                                if (newValue === undefined) {
                                    newValue = source[key];
                                }
                                if (isNew) {
                                    baseAssignValue(object, key, newValue);
                                } else {
                                    assignValue(object, key, newValue);
                                }
                            }
                            return object;
                        }

                        /**
                         * Copies own symbols of `source` to `object`.
                         *
                         * @private
                         * @param {Object} source The object to copy symbols from.
                         * @param {Object} [object={}] The object to copy symbols to.
                         * @returns {Object} Returns `object`.
                         */
                        function copySymbols(source, object) {
                            return copyObject(source, getSymbols(source), object);
                        }

                        /**
                         * Copies own and inherited symbols of `source` to `object`.
                         *
                         * @private
                         * @param {Object} source The object to copy symbols from.
                         * @param {Object} [object={}] The object to copy symbols to.
                         * @returns {Object} Returns `object`.
                         */
                        function copySymbolsIn(source, object) {
                            return copyObject(source, getSymbolsIn(source), object);
                        }

                        /**
                         * Creates a function like `_.groupBy`.
                         *
                         * @private
                         * @param {Function} setter The function to set accumulator values.
                         * @param {Function} [initializer] The accumulator object initializer.
                         * @returns {Function} Returns the new aggregator function.
                         */
                        function createAggregator(setter, initializer) {
                            return function (collection, iteratee) {
                                var func = isArray(collection) ? arrayAggregator : baseAggregator,
                                    accumulator = initializer ? initializer() : {};

                                return func(collection, setter, getIteratee(iteratee, 2), accumulator);
                            };
                        }

                        /**
                         * Creates a function like `_.assign`.
                         *
                         * @private
                         * @param {Function} assigner The function to assign values.
                         * @returns {Function} Returns the new assigner function.
                         */
                        function createAssigner(assigner) {
                            return baseRest(function (object, sources) {
                                var index = -1,
                                    length = sources.length,
                                    customizer = length > 1 ? sources[length - 1] : undefined,
                                    guard = length > 2 ? sources[2] : undefined;

                                customizer = (assigner.length > 3 && typeof customizer == 'function')
                                    ? (length--, customizer)
                                    : undefined;

                                if (guard && isIterateeCall(sources[0], sources[1], guard)) {
                                    customizer = length < 3 ? undefined : customizer;
                                    length = 1;
                                }
                                object = Object(object);
                                while (++index < length) {
                                    var source = sources[index];
                                    if (source) {
                                        assigner(object, source, index, customizer);
                                    }
                                }
                                return object;
                            });
                        }

                        /**
                         * Creates a `baseEach` or `baseEachRight` function.
                         *
                         * @private
                         * @param {Function} eachFunc The function to iterate over a collection.
                         * @param {boolean} [fromRight] Specify iterating from right to left.
                         * @returns {Function} Returns the new base function.
                         */
                        function createBaseEach(eachFunc, fromRight) {
                            return function (collection, iteratee) {
                                if (collection == null) {
                                    return collection;
                                }
                                if (!isArrayLike(collection)) {
                                    return eachFunc(collection, iteratee);
                                }
                                var length = collection.length,
                                    index = fromRight ? length : -1,
                                    iterable = Object(collection);

                                while ((fromRight ? index-- : ++index < length)) {
                                    if (iteratee(iterable[index], index, iterable) === false) {
                                        break;
                                    }
                                }
                                return collection;
                            };
                        }

                        /**
                         * Creates a base function for methods like `_.forIn` and `_.forOwn`.
                         *
                         * @private
                         * @param {boolean} [fromRight] Specify iterating from right to left.
                         * @returns {Function} Returns the new base function.
                         */
                        function createBaseFor(fromRight) {
                            return function (object, iteratee, keysFunc) {
                                var index = -1,
                                    iterable = Object(object),
                                    props = keysFunc(object),
                                    length = props.length;

                                while (length--) {
                                    var key = props[fromRight ? length : ++index];
                                    if (iteratee(iterable[key], key, iterable) === false) {
                                        break;
                                    }
                                }
                                return object;
                            };
                        }

                        /**
                         * Creates a function that wraps `func` to invoke it with the optional `this`
                         * binding of `thisArg`.
                         *
                         * @private
                         * @param {Function} func The function to wrap.
                         * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
                         * @param {*} [thisArg] The `this` binding of `func`.
                         * @returns {Function} Returns the new wrapped function.
                         */
                        function createBind(func, bitmask, thisArg) {
                            var isBind = bitmask & WRAP_BIND_FLAG,
                                Ctor = createCtor(func);

                            function wrapper() {
                                var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
                                return fn.apply(isBind ? thisArg : this, arguments);
                            }

                            return wrapper;
                        }

                        /**
                         * Creates a function like `_.lowerFirst`.
                         *
                         * @private
                         * @param {string} methodName The name of the `String` case method to use.
                         * @returns {Function} Returns the new case function.
                         */
                        function createCaseFirst(methodName) {
                            return function (string) {
                                string = toString(string);

                                var strSymbols = hasUnicode(string)
                                    ? stringToArray(string)
                                    : undefined;

                                var chr = strSymbols
                                    ? strSymbols[0]
                                    : string.charAt(0);

                                var trailing = strSymbols
                                    ? castSlice(strSymbols, 1).join('')
                                    : string.slice(1);

                                return chr[methodName]() + trailing;
                            };
                        }

                        /**
                         * Creates a function like `_.camelCase`.
                         *
                         * @private
                         * @param {Function} callback The function to combine each word.
                         * @returns {Function} Returns the new compounder function.
                         */
                        function createCompounder(callback) {
                            return function (string) {
                                return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
                            };
                        }

                        /**
                         * Creates a function that produces an instance of `Ctor` regardless of
                         * whether it was invoked as part of a `new` expression or by `call` or `apply`.
                         *
                         * @private
                         * @param {Function} Ctor The constructor to wrap.
                         * @returns {Function} Returns the new wrapped function.
                         */
                        function createCtor(Ctor) {
                            return function () {
                                // Use a `switch` statement to work with class constructors. See
                                // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
                                // for more details.
                                var args = arguments;
                                switch (args.length) {
                                    case 0:
                                        return new Ctor;
                                    case 1:
                                        return new Ctor(args[0]);
                                    case 2:
                                        return new Ctor(args[0], args[1]);
                                    case 3:
                                        return new Ctor(args[0], args[1], args[2]);
                                    case 4:
                                        return new Ctor(args[0], args[1], args[2], args[3]);
                                    case 5:
                                        return new Ctor(args[0], args[1], args[2], args[3], args[4]);
                                    case 6:
                                        return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
                                    case 7:
                                        return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
                                }
                                var thisBinding = baseCreate(Ctor.prototype),
                                    result = Ctor.apply(thisBinding, args);

                                // Mimic the constructor's `return` behavior.
                                // See https://es5.github.io/#x13.2.2 for more details.
                                return isObject(result) ? result : thisBinding;
                            };
                        }

                        /**
                         * Creates a function that wraps `func` to enable currying.
                         *
                         * @private
                         * @param {Function} func The function to wrap.
                         * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
                         * @param {number} arity The arity of `func`.
                         * @returns {Function} Returns the new wrapped function.
                         */
                        function createCurry(func, bitmask, arity) {
                            var Ctor = createCtor(func);

                            function wrapper() {
                                var length = arguments.length,
                                    args = Array(length),
                                    index = length,
                                    placeholder = getHolder(wrapper);

                                while (index--) {
                                    args[index] = arguments[index];
                                }
                                var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
                                    ? []
                                    : replaceHolders(args, placeholder);

                                length -= holders.length;
                                if (length < arity) {
                                    return createRecurry(
                                        func, bitmask, createHybrid, wrapper.placeholder, undefined,
                                        args, holders, undefined, undefined, arity - length);
                                }
                                var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
                                return apply(fn, this, args);
                            }

                            return wrapper;
                        }

                        /**
                         * Creates a `_.find` or `_.findLast` function.
                         *
                         * @private
                         * @param {Function} findIndexFunc The function to find the collection index.
                         * @returns {Function} Returns the new find function.
                         */
                        function createFind(findIndexFunc) {
                            return function (collection, predicate, fromIndex) {
                                var iterable = Object(collection);
                                if (!isArrayLike(collection)) {
                                    var iteratee = getIteratee(predicate, 3);
                                    collection = keys(collection);
                                    predicate = function (key) {
                                        return iteratee(iterable[key], key, iterable);
                                    };
                                }
                                var index = findIndexFunc(collection, predicate, fromIndex);
                                return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
                            };
                        }

                        /**
                         * Creates a `_.flow` or `_.flowRight` function.
                         *
                         * @private
                         * @param {boolean} [fromRight] Specify iterating from right to left.
                         * @returns {Function} Returns the new flow function.
                         */
                        function createFlow(fromRight) {
                            return flatRest(function (funcs) {
                                var length = funcs.length,
                                    index = length,
                                    prereq = LodashWrapper.prototype.thru;

                                if (fromRight) {
                                    funcs.reverse();
                                }
                                while (index--) {
                                    var func = funcs[index];
                                    if (typeof func != 'function') {
                                        throw new TypeError(FUNC_ERROR_TEXT);
                                    }
                                    if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
                                        var wrapper = new LodashWrapper([], true);
                                    }
                                }
                                index = wrapper ? index : length;
                                while (++index < length) {
                                    func = funcs[index];

                                    var funcName = getFuncName(func),
                                        data = funcName == 'wrapper' ? getData(func) : undefined;

                                    if (data && isLaziable(data[0]) &&
                                        data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
                                        !data[4].length && data[9] == 1
                                    ) {
                                        wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
                                    } else {
                                        wrapper = (func.length == 1 && isLaziable(func))
                                            ? wrapper[funcName]()
                                            : wrapper.thru(func);
                                    }
                                }
                                return function () {
                                    var args = arguments,
                                        value = args[0];

                                    if (wrapper && args.length == 1 && isArray(value)) {
                                        return wrapper.plant(value).value();
                                    }
                                    var index = 0,
                                        result = length ? funcs[index].apply(this, args) : value;

                                    while (++index < length) {
                                        result = funcs[index].call(this, result);
                                    }
                                    return result;
                                };
                            });
                        }

                        /**
                         * Creates a function that wraps `func` to invoke it with optional `this`
                         * binding of `thisArg`, partial application, and currying.
                         *
                         * @private
                         * @param {Function|string} func The function or method name to wrap.
                         * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
                         * @param {*} [thisArg] The `this` binding of `func`.
                         * @param {Array} [partials] The arguments to prepend to those provided to
                         *  the new function.
                         * @param {Array} [holders] The `partials` placeholder indexes.
                         * @param {Array} [partialsRight] The arguments to append to those provided
                         *  to the new function.
                         * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
                         * @param {Array} [argPos] The argument positions of the new function.
                         * @param {number} [ary] The arity cap of `func`.
                         * @param {number} [arity] The arity of `func`.
                         * @returns {Function} Returns the new wrapped function.
                         */
                        function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
                            var isAry = bitmask & WRAP_ARY_FLAG,
                                isBind = bitmask & WRAP_BIND_FLAG,
                                isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
                                isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
                                isFlip = bitmask & WRAP_FLIP_FLAG,
                                Ctor = isBindKey ? undefined : createCtor(func);

                            function wrapper() {
                                var length = arguments.length,
                                    args = Array(length),
                                    index = length;

                                while (index--) {
                                    args[index] = arguments[index];
                                }
                                if (isCurried) {
                                    var placeholder = getHolder(wrapper),
                                        holdersCount = countHolders(args, placeholder);
                                }
                                if (partials) {
                                    args = composeArgs(args, partials, holders, isCurried);
                                }
                                if (partialsRight) {
                                    args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
                                }
                                length -= holdersCount;
                                if (isCurried && length < arity) {
                                    var newHolders = replaceHolders(args, placeholder);
                                    return createRecurry(
                                        func, bitmask, createHybrid, wrapper.placeholder, thisArg,
                                        args, newHolders, argPos, ary, arity - length
                                    );
                                }
                                var thisBinding = isBind ? thisArg : this,
                                    fn = isBindKey ? thisBinding[func] : func;

                                length = args.length;
                                if (argPos) {
                                    args = reorder(args, argPos);
                                } else if (isFlip && length > 1) {
                                    args.reverse();
                                }
                                if (isAry && ary < length) {
                                    args.length = ary;
                                }
                                if (this && this !== root && this instanceof wrapper) {
                                    fn = Ctor || createCtor(fn);
                                }
                                return fn.apply(thisBinding, args);
                            }

                            return wrapper;
                        }

                        /**
                         * Creates a function like `_.invertBy`.
                         *
                         * @private
                         * @param {Function} setter The function to set accumulator values.
                         * @param {Function} toIteratee The function to resolve iteratees.
                         * @returns {Function} Returns the new inverter function.
                         */
                        function createInverter(setter, toIteratee) {
                            return function (object, iteratee) {
                                return baseInverter(object, setter, toIteratee(iteratee), {});
                            };
                        }

                        /**
                         * Creates a function that performs a mathematical operation on two values.
                         *
                         * @private
                         * @param {Function} operator The function to perform the operation.
                         * @param {number} [defaultValue] The value used for `undefined` arguments.
                         * @returns {Function} Returns the new mathematical operation function.
                         */
                        function createMathOperation(operator, defaultValue) {
                            return function (value, other) {
                                var result;
                                if (value === undefined && other === undefined) {
                                    return defaultValue;
                                }
                                if (value !== undefined) {
                                    result = value;
                                }
                                if (other !== undefined) {
                                    if (result === undefined) {
                                        return other;
                                    }
                                    if (typeof value == 'string' || typeof other == 'string') {
                                        value = baseToString(value);
                                        other = baseToString(other);
                                    } else {
                                        value = baseToNumber(value);
                                        other = baseToNumber(other);
                                    }
                                    result = operator(value, other);
                                }
                                return result;
                            };
                        }

                        /**
                         * Creates a function like `_.over`.
                         *
                         * @private
                         * @param {Function} arrayFunc The function to iterate over iteratees.
                         * @returns {Function} Returns the new over function.
                         */
                        function createOver(arrayFunc) {
                            return flatRest(function (iteratees) {
                                iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
                                return baseRest(function (args) {
                                    var thisArg = this;
                                    return arrayFunc(iteratees, function (iteratee) {
                                        return apply(iteratee, thisArg, args);
                                    });
                                });
                            });
                        }

                        /**
                         * Creates the padding for `string` based on `length`. The `chars` string
                         * is truncated if the number of characters exceeds `length`.
                         *
                         * @private
                         * @param {number} length The padding length.
                         * @param {string} [chars=' '] The string used as padding.
                         * @returns {string} Returns the padding for `string`.
                         */
                        function createPadding(length, chars) {
                            chars = chars === undefined ? ' ' : baseToString(chars);

                            var charsLength = chars.length;
                            if (charsLength < 2) {
                                return charsLength ? baseRepeat(chars, length) : chars;
                            }
                            var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
                            return hasUnicode(chars)
                                ? castSlice(stringToArray(result), 0, length).join('')
                                : result.slice(0, length);
                        }

                        /**
                         * Creates a function that wraps `func` to invoke it with the `this` binding
                         * of `thisArg` and `partials` prepended to the arguments it receives.
                         *
                         * @private
                         * @param {Function} func The function to wrap.
                         * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
                         * @param {*} thisArg The `this` binding of `func`.
                         * @param {Array} partials The arguments to prepend to those provided to
                         *  the new function.
                         * @returns {Function} Returns the new wrapped function.
                         */
                        function createPartial(func, bitmask, thisArg, partials) {
                            var isBind = bitmask & WRAP_BIND_FLAG,
                                Ctor = createCtor(func);

                            function wrapper() {
                                var argsIndex = -1,
                                    argsLength = arguments.length,
                                    leftIndex = -1,
                                    leftLength = partials.length,
                                    args = Array(leftLength + argsLength),
                                    fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;

                                while (++leftIndex < leftLength) {
                                    args[leftIndex] = partials[leftIndex];
                                }
                                while (argsLength--) {
                                    args[leftIndex++] = arguments[++argsIndex];
                                }
                                return apply(fn, isBind ? thisArg : this, args);
                            }

                            return wrapper;
                        }

                        /**
                         * Creates a `_.range` or `_.rangeRight` function.
                         *
                         * @private
                         * @param {boolean} [fromRight] Specify iterating from right to left.
                         * @returns {Function} Returns the new range function.
                         */
                        function createRange(fromRight) {
                            return function (start, end, step) {
                                if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
                                    end = step = undefined;
                                }
                                // Ensure the sign of `-0` is preserved.
                                start = toFinite(start);
                                if (end === undefined) {
                                    end = start;
                                    start = 0;
                                } else {
                                    end = toFinite(end);
                                }
                                step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
                                return baseRange(start, end, step, fromRight);
                            };
                        }

                        /**
                         * Creates a function that performs a relational operation on two values.
                         *
                         * @private
                         * @param {Function} operator The function to perform the operation.
                         * @returns {Function} Returns the new relational operation function.
                         */
                        function createRelationalOperation(operator) {
                            return function (value, other) {
                                if (!(typeof value == 'string' && typeof other == 'string')) {
                                    value = toNumber(value);
                                    other = toNumber(other);
                                }
                                return operator(value, other);
                            };
                        }

                        /**
                         * Creates a function that wraps `func` to continue currying.
                         *
                         * @private
                         * @param {Function} func The function to wrap.
                         * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
                         * @param {Function} wrapFunc The function to create the `func` wrapper.
                         * @param {*} placeholder The placeholder value.
                         * @param {*} [thisArg] The `this` binding of `func`.
                         * @param {Array} [partials] The arguments to prepend to those provided to
                         *  the new function.
                         * @param {Array} [holders] The `partials` placeholder indexes.
                         * @param {Array} [argPos] The argument positions of the new function.
                         * @param {number} [ary] The arity cap of `func`.
                         * @param {number} [arity] The arity of `func`.
                         * @returns {Function} Returns the new wrapped function.
                         */
                        function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
                            var isCurry = bitmask & WRAP_CURRY_FLAG,
                                newHolders = isCurry ? holders : undefined,
                                newHoldersRight = isCurry ? undefined : holders,
                                newPartials = isCurry ? partials : undefined,
                                newPartialsRight = isCurry ? undefined : partials;

                            bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
                            bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);

                            if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
                                bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
                            }
                            var newData = [
                                func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
                                newHoldersRight, argPos, ary, arity
                            ];

                            var result = wrapFunc.apply(undefined, newData);
                            if (isLaziable(func)) {
                                setData(result, newData);
                            }
                            result.placeholder = placeholder;
                            return setWrapToString(result, func, bitmask);
                        }

                        /**
                         * Creates a function like `_.round`.
                         *
                         * @private
                         * @param {string} methodName The name of the `Math` method to use when rounding.
                         * @returns {Function} Returns the new round function.
                         */
                        function createRound(methodName) {
                            var func = Math[methodName];
                            return function (number, precision) {
                                number = toNumber(number);
                                precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
                                if (precision && nativeIsFinite(number)) {
                                    // Shift with exponential notation to avoid floating-point issues.
                                    // See [MDN](https://mdn.io/round#Examples) for more details.
                                    var pair = (toString(number) + 'e').split('e'),
                                        value = func(pair[0] + 'e' + (+pair[1] + precision));

                                    pair = (toString(value) + 'e').split('e');
                                    return +(pair[0] + 'e' + (+pair[1] - precision));
                                }
                                return func(number);
                            };
                        }

                        /**
                         * Creates a set object of `values`.
                         *
                         * @private
                         * @param {Array} values The values to add to the set.
                         * @returns {Object} Returns the new set.
                         */
                        var createSet = !(Set && (1 / setToArray(new Set([, -0]))[1]) == INFINITY) ? noop : function (values) {
                            return new Set(values);
                        };

                        /**
                         * Creates a `_.toPairs` or `_.toPairsIn` function.
                         *
                         * @private
                         * @param {Function} keysFunc The function to get the keys of a given object.
                         * @returns {Function} Returns the new pairs function.
                         */
                        function createToPairs(keysFunc) {
                            return function (object) {
                                var tag = getTag(object);
                                if (tag == mapTag) {
                                    return mapToArray(object);
                                }
                                if (tag == setTag) {
                                    return setToPairs(object);
                                }
                                return baseToPairs(object, keysFunc(object));
                            };
                        }

                        /**
                         * Creates a function that either curries or invokes `func` with optional
                         * `this` binding and partially applied arguments.
                         *
                         * @private
                         * @param {Function|string} func The function or method name to wrap.
                         * @param {number} bitmask The bitmask flags.
                         *    1 - `_.bind`
                         *    2 - `_.bindKey`
                         *    4 - `_.curry` or `_.curryRight` of a bound function
                         *    8 - `_.curry`
                         *   16 - `_.curryRight`
                         *   32 - `_.partial`
                         *   64 - `_.partialRight`
                         *  128 - `_.rearg`
                         *  256 - `_.ary`
                         *  512 - `_.flip`
                         * @param {*} [thisArg] The `this` binding of `func`.
                         * @param {Array} [partials] The arguments to be partially applied.
                         * @param {Array} [holders] The `partials` placeholder indexes.
                         * @param {Array} [argPos] The argument positions of the new function.
                         * @param {number} [ary] The arity cap of `func`.
                         * @param {number} [arity] The arity of `func`.
                         * @returns {Function} Returns the new wrapped function.
                         */
                        function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
                            var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
                            if (!isBindKey && typeof func != 'function') {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            var length = partials ? partials.length : 0;
                            if (!length) {
                                bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
                                partials = holders = undefined;
                            }
                            ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
                            arity = arity === undefined ? arity : toInteger(arity);
                            length -= holders ? holders.length : 0;

                            if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
                                var partialsRight = partials,
                                    holdersRight = holders;

                                partials = holders = undefined;
                            }
                            var data = isBindKey ? undefined : getData(func);

                            var newData = [
                                func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
                                argPos, ary, arity
                            ];

                            if (data) {
                                mergeData(newData, data);
                            }
                            func = newData[0];
                            bitmask = newData[1];
                            thisArg = newData[2];
                            partials = newData[3];
                            holders = newData[4];
                            arity = newData[9] = newData[9] === undefined
                                ? (isBindKey ? 0 : func.length)
                                : nativeMax(newData[9] - length, 0);

                            if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
                                bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
                            }
                            if (!bitmask || bitmask == WRAP_BIND_FLAG) {
                                var result = createBind(func, bitmask, thisArg);
                            } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
                                result = createCurry(func, bitmask, arity);
                            } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
                                result = createPartial(func, bitmask, thisArg, partials);
                            } else {
                                result = createHybrid.apply(undefined, newData);
                            }
                            var setter = data ? baseSetData : setData;
                            return setWrapToString(setter(result, newData), func, bitmask);
                        }

                        /**
                         * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
                         * of source objects to the destination object for all destination properties
                         * that resolve to `undefined`.
                         *
                         * @private
                         * @param {*} objValue The destination value.
                         * @param {*} srcValue The source value.
                         * @param {string} key The key of the property to assign.
                         * @param {Object} object The parent object of `objValue`.
                         * @returns {*} Returns the value to assign.
                         */
                        function customDefaultsAssignIn(objValue, srcValue, key, object) {
                            if (objValue === undefined ||
                                (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
                                return srcValue;
                            }
                            return objValue;
                        }

                        /**
                         * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
                         * objects into destination objects that are passed thru.
                         *
                         * @private
                         * @param {*} objValue The destination value.
                         * @param {*} srcValue The source value.
                         * @param {string} key The key of the property to merge.
                         * @param {Object} object The parent object of `objValue`.
                         * @param {Object} source The parent object of `srcValue`.
                         * @param {Object} [stack] Tracks traversed source values and their merged
                         *  counterparts.
                         * @returns {*} Returns the value to assign.
                         */
                        function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
                            if (isObject(objValue) && isObject(srcValue)) {
                                // Recursively merge objects and arrays (susceptible to call stack limits).
                                stack.set(srcValue, objValue);
                                baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
                                stack['delete'](srcValue);
                            }
                            return objValue;
                        }

                        /**
                         * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
                         * objects.
                         *
                         * @private
                         * @param {*} value The value to inspect.
                         * @param {string} key The key of the property to inspect.
                         * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
                         */
                        function customOmitClone(value) {
                            return isPlainObject(value) ? undefined : value;
                        }

                        /**
                         * A specialized version of `baseIsEqualDeep` for arrays with support for
                         * partial deep comparisons.
                         *
                         * @private
                         * @param {Array} array The array to compare.
                         * @param {Array} other The other array to compare.
                         * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
                         * @param {Function} customizer The function to customize comparisons.
                         * @param {Function} equalFunc The function to determine equivalents of values.
                         * @param {Object} stack Tracks traversed `array` and `other` objects.
                         * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
                         */
                        function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
                            var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
                                arrLength = array.length,
                                othLength = other.length;

                            if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
                                return false;
                            }
                            // Check that cyclic values are equal.
                            var arrStacked = stack.get(array);
                            var othStacked = stack.get(other);
                            if (arrStacked && othStacked) {
                                return arrStacked == other && othStacked == array;
                            }
                            var index = -1,
                                result = true,
                                seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;

                            stack.set(array, other);
                            stack.set(other, array);

                            // Ignore non-index properties.
                            while (++index < arrLength) {
                                var arrValue = array[index],
                                    othValue = other[index];

                                if (customizer) {
                                    var compared = isPartial
                                        ? customizer(othValue, arrValue, index, other, array, stack)
                                        : customizer(arrValue, othValue, index, array, other, stack);
                                }
                                if (compared !== undefined) {
                                    if (compared) {
                                        continue;
                                    }
                                    result = false;
                                    break;
                                }
                                // Recursively compare arrays (susceptible to call stack limits).
                                if (seen) {
                                    if (!arraySome(other, function (othValue, othIndex) {
                                        if (!cacheHas(seen, othIndex) &&
                                            (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                                            return seen.push(othIndex);
                                        }
                                    })) {
                                        result = false;
                                        break;
                                    }
                                } else if (!(
                                    arrValue === othValue ||
                                    equalFunc(arrValue, othValue, bitmask, customizer, stack)
                                )) {
                                    result = false;
                                    break;
                                }
                            }
                            stack['delete'](array);
                            stack['delete'](other);
                            return result;
                        }

                        /**
                         * A specialized version of `baseIsEqualDeep` for comparing objects of
                         * the same `toStringTag`.
                         *
                         * **Note:** This function only supports comparing values with tags of
                         * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
                         *
                         * @private
                         * @param {Object} object The object to compare.
                         * @param {Object} other The other object to compare.
                         * @param {string} tag The `toStringTag` of the objects to compare.
                         * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
                         * @param {Function} customizer The function to customize comparisons.
                         * @param {Function} equalFunc The function to determine equivalents of values.
                         * @param {Object} stack Tracks traversed `object` and `other` objects.
                         * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
                         */
                        function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
                            switch (tag) {
                                case dataViewTag:
                                    if ((object.byteLength != other.byteLength) ||
                                        (object.byteOffset != other.byteOffset)) {
                                        return false;
                                    }
                                    object = object.buffer;
                                    other = other.buffer;

                                case arrayBufferTag:
                                    if ((object.byteLength != other.byteLength) ||
                                        !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
                                        return false;
                                    }
                                    return true;

                                case boolTag:
                                case dateTag:
                                case numberTag:
                                    // Coerce booleans to `1` or `0` and dates to milliseconds.
                                    // Invalid dates are coerced to `NaN`.
                                    return eq(+object, +other);

                                case errorTag:
                                    return object.name == other.name && object.message == other.message;

                                case regexpTag:
                                case stringTag:
                                    // Coerce regexes to strings and treat strings, primitives and objects,
                                    // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
                                    // for more details.
                                    return object == (other + '');

                                case mapTag:
                                    var convert = mapToArray;

                                case setTag:
                                    var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
                                    convert || (convert = setToArray);

                                    if (object.size != other.size && !isPartial) {
                                        return false;
                                    }
                                    // Assume cyclic values are equal.
                                    var stacked = stack.get(object);
                                    if (stacked) {
                                        return stacked == other;
                                    }
                                    bitmask |= COMPARE_UNORDERED_FLAG;

                                    // Recursively compare objects (susceptible to call stack limits).
                                    stack.set(object, other);
                                    var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
                                    stack['delete'](object);
                                    return result;

                                case symbolTag:
                                    if (symbolValueOf) {
                                        return symbolValueOf.call(object) == symbolValueOf.call(other);
                                    }
                            }
                            return false;
                        }

                        /**
                         * A specialized version of `baseIsEqualDeep` for objects with support for
                         * partial deep comparisons.
                         *
                         * @private
                         * @param {Object} object The object to compare.
                         * @param {Object} other The other object to compare.
                         * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
                         * @param {Function} customizer The function to customize comparisons.
                         * @param {Function} equalFunc The function to determine equivalents of values.
                         * @param {Object} stack Tracks traversed `object` and `other` objects.
                         * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
                         */
                        function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
                            var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
                                objProps = getAllKeys(object),
                                objLength = objProps.length,
                                othProps = getAllKeys(other),
                                othLength = othProps.length;

                            if (objLength != othLength && !isPartial) {
                                return false;
                            }
                            var index = objLength;
                            while (index--) {
                                var key = objProps[index];
                                if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
                                    return false;
                                }
                            }
                            // Check that cyclic values are equal.
                            var objStacked = stack.get(object);
                            var othStacked = stack.get(other);
                            if (objStacked && othStacked) {
                                return objStacked == other && othStacked == object;
                            }
                            var result = true;
                            stack.set(object, other);
                            stack.set(other, object);

                            var skipCtor = isPartial;
                            while (++index < objLength) {
                                key = objProps[index];
                                var objValue = object[key],
                                    othValue = other[key];

                                if (customizer) {
                                    var compared = isPartial
                                        ? customizer(othValue, objValue, key, other, object, stack)
                                        : customizer(objValue, othValue, key, object, other, stack);
                                }
                                // Recursively compare objects (susceptible to call stack limits).
                                if (!(compared === undefined
                                        ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
                                        : compared
                                )) {
                                    result = false;
                                    break;
                                }
                                skipCtor || (skipCtor = key == 'constructor');
                            }
                            if (result && !skipCtor) {
                                var objCtor = object.constructor,
                                    othCtor = other.constructor;

                                // Non `Object` object instances with different constructors are not equal.
                                if (objCtor != othCtor &&
                                    ('constructor' in object && 'constructor' in other) &&
                                    !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
                                        typeof othCtor == 'function' && othCtor instanceof othCtor)) {
                                    result = false;
                                }
                            }
                            stack['delete'](object);
                            stack['delete'](other);
                            return result;
                        }

                        /**
                         * A specialized version of `baseRest` which flattens the rest array.
                         *
                         * @private
                         * @param {Function} func The function to apply a rest parameter to.
                         * @returns {Function} Returns the new function.
                         */
                        function flatRest(func) {
                            return setToString(overRest(func, undefined, flatten), func + '');
                        }

                        /**
                         * Creates an array of own enumerable property names and symbols of `object`.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of property names and symbols.
                         */
                        function getAllKeys(object) {
                            return baseGetAllKeys(object, keys, getSymbols);
                        }

                        /**
                         * Creates an array of own and inherited enumerable property names and
                         * symbols of `object`.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of property names and symbols.
                         */
                        function getAllKeysIn(object) {
                            return baseGetAllKeys(object, keysIn, getSymbolsIn);
                        }

                        /**
                         * Gets metadata for `func`.
                         *
                         * @private
                         * @param {Function} func The function to query.
                         * @returns {*} Returns the metadata for `func`.
                         */
                        var getData = !metaMap ? noop : function (func) {
                            return metaMap.get(func);
                        };

                        /**
                         * Gets the name of `func`.
                         *
                         * @private
                         * @param {Function} func The function to query.
                         * @returns {string} Returns the function name.
                         */
                        function getFuncName(func) {
                            var result = (func.name + ''),
                                array = realNames[result],
                                length = hasOwnProperty.call(realNames, result) ? array.length : 0;

                            while (length--) {
                                var data = array[length],
                                    otherFunc = data.func;
                                if (otherFunc == null || otherFunc == func) {
                                    return data.name;
                                }
                            }
                            return result;
                        }

                        /**
                         * Gets the argument placeholder value for `func`.
                         *
                         * @private
                         * @param {Function} func The function to inspect.
                         * @returns {*} Returns the placeholder value.
                         */
                        function getHolder(func) {
                            var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
                            return object.placeholder;
                        }

                        /**
                         * Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
                         * this function returns the custom method, otherwise it returns `baseIteratee`.
                         * If arguments are provided, the chosen function is invoked with them and
                         * its result is returned.
                         *
                         * @private
                         * @param {*} [value] The value to convert to an iteratee.
                         * @param {number} [arity] The arity of the created iteratee.
                         * @returns {Function} Returns the chosen function or its result.
                         */
                        function getIteratee() {
                            var result = lodash.iteratee || iteratee;
                            result = result === iteratee ? baseIteratee : result;
                            return arguments.length ? result(arguments[0], arguments[1]) : result;
                        }

                        /**
                         * Gets the data for `map`.
                         *
                         * @private
                         * @param {Object} map The map to query.
                         * @param {string} key The reference key.
                         * @returns {*} Returns the map data.
                         */
                        function getMapData(map, key) {
                            var data = map.__data__;
                            return isKeyable(key)
                                ? data[typeof key == 'string' ? 'string' : 'hash']
                                : data.map;
                        }

                        /**
                         * Gets the property names, values, and compare flags of `object`.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the match data of `object`.
                         */
                        function getMatchData(object) {
                            var result = keys(object),
                                length = result.length;

                            while (length--) {
                                var key = result[length],
                                    value = object[key];

                                result[length] = [key, value, isStrictComparable(value)];
                            }
                            return result;
                        }

                        /**
                         * Gets the native function at `key` of `object`.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @param {string} key The key of the method to get.
                         * @returns {*} Returns the function if it's native, else `undefined`.
                         */
                        function getNative(object, key) {
                            var value = getValue(object, key);
                            return baseIsNative(value) ? value : undefined;
                        }

                        /**
                         * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
                         *
                         * @private
                         * @param {*} value The value to query.
                         * @returns {string} Returns the raw `toStringTag`.
                         */
                        function getRawTag(value) {
                            var isOwn = hasOwnProperty.call(value, symToStringTag),
                                tag = value[symToStringTag];

                            try {
                                value[symToStringTag] = undefined;
                                var unmasked = true;
                            } catch (e) {
                            }

                            var result = nativeObjectToString.call(value);
                            if (unmasked) {
                                if (isOwn) {
                                    value[symToStringTag] = tag;
                                } else {
                                    delete value[symToStringTag];
                                }
                            }
                            return result;
                        }

                        /**
                         * Creates an array of the own enumerable symbols of `object`.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of symbols.
                         */
                        var getSymbols = !nativeGetSymbols ? stubArray : function (object) {
                            if (object == null) {
                                return [];
                            }
                            object = Object(object);
                            return arrayFilter(nativeGetSymbols(object), function (symbol) {
                                return propertyIsEnumerable.call(object, symbol);
                            });
                        };

                        /**
                         * Creates an array of the own and inherited enumerable symbols of `object`.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of symbols.
                         */
                        var getSymbolsIn = !nativeGetSymbols ? stubArray : function (object) {
                            var result = [];
                            while (object) {
                                arrayPush(result, getSymbols(object));
                                object = getPrototype(object);
                            }
                            return result;
                        };

                        /**
                         * Gets the `toStringTag` of `value`.
                         *
                         * @private
                         * @param {*} value The value to query.
                         * @returns {string} Returns the `toStringTag`.
                         */
                        var getTag = baseGetTag;

                        // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
                        if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
                            (Map && getTag(new Map) != mapTag) ||
                            (Promise && getTag(Promise.resolve()) != promiseTag) ||
                            (Set && getTag(new Set) != setTag) ||
                            (WeakMap && getTag(new WeakMap) != weakMapTag)) {
                            getTag = function (value) {
                                var result = baseGetTag(value),
                                    Ctor = result == objectTag ? value.constructor : undefined,
                                    ctorString = Ctor ? toSource(Ctor) : '';

                                if (ctorString) {
                                    switch (ctorString) {
                                        case dataViewCtorString:
                                            return dataViewTag;
                                        case mapCtorString:
                                            return mapTag;
                                        case promiseCtorString:
                                            return promiseTag;
                                        case setCtorString:
                                            return setTag;
                                        case weakMapCtorString:
                                            return weakMapTag;
                                    }
                                }
                                return result;
                            };
                        }

                        /**
                         * Gets the view, applying any `transforms` to the `start` and `end` positions.
                         *
                         * @private
                         * @param {number} start The start of the view.
                         * @param {number} end The end of the view.
                         * @param {Array} transforms The transformations to apply to the view.
                         * @returns {Object} Returns an object containing the `start` and `end`
                         *  positions of the view.
                         */
                        function getView(start, end, transforms) {
                            var index = -1,
                                length = transforms.length;

                            while (++index < length) {
                                var data = transforms[index],
                                    size = data.size;

                                switch (data.type) {
                                    case 'drop':
                                        start += size;
                                        break;
                                    case 'dropRight':
                                        end -= size;
                                        break;
                                    case 'take':
                                        end = nativeMin(end, start + size);
                                        break;
                                    case 'takeRight':
                                        start = nativeMax(start, end - size);
                                        break;
                                }
                            }
                            return {'start': start, 'end': end};
                        }

                        /**
                         * Extracts wrapper details from the `source` body comment.
                         *
                         * @private
                         * @param {string} source The source to inspect.
                         * @returns {Array} Returns the wrapper details.
                         */
                        function getWrapDetails(source) {
                            var match = source.match(reWrapDetails);
                            return match ? match[1].split(reSplitDetails) : [];
                        }

                        /**
                         * Checks if `path` exists on `object`.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @param {Array|string} path The path to check.
                         * @param {Function} hasFunc The function to check properties.
                         * @returns {boolean} Returns `true` if `path` exists, else `false`.
                         */
                        function hasPath(object, path, hasFunc) {
                            path = castPath(path, object);

                            var index = -1,
                                length = path.length,
                                result = false;

                            while (++index < length) {
                                var key = toKey(path[index]);
                                if (!(result = object != null && hasFunc(object, key))) {
                                    break;
                                }
                                object = object[key];
                            }
                            if (result || ++index != length) {
                                return result;
                            }
                            length = object == null ? 0 : object.length;
                            return !!length && isLength(length) && isIndex(key, length) &&
                                (isArray(object) || isArguments(object));
                        }

                        /**
                         * Initializes an array clone.
                         *
                         * @private
                         * @param {Array} array The array to clone.
                         * @returns {Array} Returns the initialized clone.
                         */
                        function initCloneArray(array) {
                            var length = array.length,
                                result = new array.constructor(length);

                            // Add properties assigned by `RegExp#exec`.
                            if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
                                result.index = array.index;
                                result.input = array.input;
                            }
                            return result;
                        }

                        /**
                         * Initializes an object clone.
                         *
                         * @private
                         * @param {Object} object The object to clone.
                         * @returns {Object} Returns the initialized clone.
                         */
                        function initCloneObject(object) {
                            return (typeof object.constructor == 'function' && !isPrototype(object))
                                ? baseCreate(getPrototype(object))
                                : {};
                        }

                        /**
                         * Initializes an object clone based on its `toStringTag`.
                         *
                         * **Note:** This function only supports cloning values with tags of
                         * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
                         *
                         * @private
                         * @param {Object} object The object to clone.
                         * @param {string} tag The `toStringTag` of the object to clone.
                         * @param {boolean} [isDeep] Specify a deep clone.
                         * @returns {Object} Returns the initialized clone.
                         */
                        function initCloneByTag(object, tag, isDeep) {
                            var Ctor = object.constructor;
                            switch (tag) {
                                case arrayBufferTag:
                                    return cloneArrayBuffer(object);

                                case boolTag:
                                case dateTag:
                                    return new Ctor(+object);

                                case dataViewTag:
                                    return cloneDataView(object, isDeep);

                                case float32Tag:
                                case float64Tag:
                                case int8Tag:
                                case int16Tag:
                                case int32Tag:
                                case uint8Tag:
                                case uint8ClampedTag:
                                case uint16Tag:
                                case uint32Tag:
                                    return cloneTypedArray(object, isDeep);

                                case mapTag:
                                    return new Ctor;

                                case numberTag:
                                case stringTag:
                                    return new Ctor(object);

                                case regexpTag:
                                    return cloneRegExp(object);

                                case setTag:
                                    return new Ctor;

                                case symbolTag:
                                    return cloneSymbol(object);
                            }
                        }

                        /**
                         * Inserts wrapper `details` in a comment at the top of the `source` body.
                         *
                         * @private
                         * @param {string} source The source to modify.
                         * @returns {Array} details The details to insert.
                         * @returns {string} Returns the modified source.
                         */
                        function insertWrapDetails(source, details) {
                            var length = details.length;
                            if (!length) {
                                return source;
                            }
                            var lastIndex = length - 1;
                            details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
                            details = details.join(length > 2 ? ', ' : ' ');
                            return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
                        }

                        /**
                         * Checks if `value` is a flattenable `arguments` object or array.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
                         */
                        function isFlattenable(value) {
                            return isArray(value) || isArguments(value) ||
                                !!(spreadableSymbol && value && value[spreadableSymbol]);
                        }

                        /**
                         * Checks if `value` is a valid array-like index.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
                         * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
                         */
                        function isIndex(value, length) {
                            var type = typeof value;
                            length = length == null ? MAX_SAFE_INTEGER : length;

                            return !!length &&
                                (type == 'number' ||
                                    (type != 'symbol' && reIsUint.test(value))) &&
                                (value > -1 && value % 1 == 0 && value < length);
                        }

                        /**
                         * Checks if the given arguments are from an iteratee call.
                         *
                         * @private
                         * @param {*} value The potential iteratee value argument.
                         * @param {*} index The potential iteratee index or key argument.
                         * @param {*} object The potential iteratee object argument.
                         * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
                         *  else `false`.
                         */
                        function isIterateeCall(value, index, object) {
                            if (!isObject(object)) {
                                return false;
                            }
                            var type = typeof index;
                            if (type == 'number'
                                ? (isArrayLike(object) && isIndex(index, object.length))
                                : (type == 'string' && index in object)
                            ) {
                                return eq(object[index], value);
                            }
                            return false;
                        }

                        /**
                         * Checks if `value` is a property name and not a property path.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @param {Object} [object] The object to query keys on.
                         * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
                         */
                        function isKey(value, object) {
                            if (isArray(value)) {
                                return false;
                            }
                            var type = typeof value;
                            if (type == 'number' || type == 'symbol' || type == 'boolean' ||
                                value == null || isSymbol(value)) {
                                return true;
                            }
                            return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
                                (object != null && value in Object(object));
                        }

                        /**
                         * Checks if `value` is suitable for use as unique object key.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
                         */
                        function isKeyable(value) {
                            var type = typeof value;
                            return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
                                ? (value !== '__proto__')
                                : (value === null);
                        }

                        /**
                         * Checks if `func` has a lazy counterpart.
                         *
                         * @private
                         * @param {Function} func The function to check.
                         * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
                         *  else `false`.
                         */
                        function isLaziable(func) {
                            var funcName = getFuncName(func),
                                other = lodash[funcName];

                            if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
                                return false;
                            }
                            if (func === other) {
                                return true;
                            }
                            var data = getData(other);
                            return !!data && func === data[0];
                        }

                        /**
                         * Checks if `func` has its source masked.
                         *
                         * @private
                         * @param {Function} func The function to check.
                         * @returns {boolean} Returns `true` if `func` is masked, else `false`.
                         */
                        function isMasked(func) {
                            return !!maskSrcKey && (maskSrcKey in func);
                        }

                        /**
                         * Checks if `func` is capable of being masked.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
                         */
                        var isMaskable = coreJsData ? isFunction : stubFalse;

                        /**
                         * Checks if `value` is likely a prototype object.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
                         */
                        function isPrototype(value) {
                            var Ctor = value && value.constructor,
                                proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

                            return value === proto;
                        }

                        /**
                         * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
                         *
                         * @private
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` if suitable for strict
                         *  equality comparisons, else `false`.
                         */
                        function isStrictComparable(value) {
                            return value === value && !isObject(value);
                        }

                        /**
                         * A specialized version of `matchesProperty` for source values suitable
                         * for strict equality comparisons, i.e. `===`.
                         *
                         * @private
                         * @param {string} key The key of the property to get.
                         * @param {*} srcValue The value to match.
                         * @returns {Function} Returns the new spec function.
                         */
                        function matchesStrictComparable(key, srcValue) {
                            return function (object) {
                                if (object == null) {
                                    return false;
                                }
                                return object[key] === srcValue &&
                                    (srcValue !== undefined || (key in Object(object)));
                            };
                        }

                        /**
                         * A specialized version of `_.memoize` which clears the memoized function's
                         * cache when it exceeds `MAX_MEMOIZE_SIZE`.
                         *
                         * @private
                         * @param {Function} func The function to have its output memoized.
                         * @returns {Function} Returns the new memoized function.
                         */
                        function memoizeCapped(func) {
                            var result = memoize(func, function (key) {
                                if (cache.size === MAX_MEMOIZE_SIZE) {
                                    cache.clear();
                                }
                                return key;
                            });

                            var cache = result.cache;
                            return result;
                        }

                        /**
                         * Merges the function metadata of `source` into `data`.
                         *
                         * Merging metadata reduces the number of wrappers used to invoke a function.
                         * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
                         * may be applied regardless of execution order. Methods like `_.ary` and
                         * `_.rearg` modify function arguments, making the order in which they are
                         * executed important, preventing the merging of metadata. However, we make
                         * an exception for a safe combined case where curried functions have `_.ary`
                         * and or `_.rearg` applied.
                         *
                         * @private
                         * @param {Array} data The destination metadata.
                         * @param {Array} source The source metadata.
                         * @returns {Array} Returns `data`.
                         */
                        function mergeData(data, source) {
                            var bitmask = data[1],
                                srcBitmask = source[1],
                                newBitmask = bitmask | srcBitmask,
                                isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);

                            var isCombo =
                                ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
                                ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
                                ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));

                            // Exit early if metadata can't be merged.
                            if (!(isCommon || isCombo)) {
                                return data;
                            }
                            // Use source `thisArg` if available.
                            if (srcBitmask & WRAP_BIND_FLAG) {
                                data[2] = source[2];
                                // Set when currying a bound function.
                                newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
                            }
                            // Compose partial arguments.
                            var value = source[3];
                            if (value) {
                                var partials = data[3];
                                data[3] = partials ? composeArgs(partials, value, source[4]) : value;
                                data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
                            }
                            // Compose partial right arguments.
                            value = source[5];
                            if (value) {
                                partials = data[5];
                                data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
                                data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
                            }
                            // Use source `argPos` if available.
                            value = source[7];
                            if (value) {
                                data[7] = value;
                            }
                            // Use source `ary` if it's smaller.
                            if (srcBitmask & WRAP_ARY_FLAG) {
                                data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
                            }
                            // Use source `arity` if one is not provided.
                            if (data[9] == null) {
                                data[9] = source[9];
                            }
                            // Use source `func` and merge bitmasks.
                            data[0] = source[0];
                            data[1] = newBitmask;

                            return data;
                        }

                        /**
                         * This function is like
                         * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
                         * except that it includes inherited enumerable properties.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of property names.
                         */
                        function nativeKeysIn(object) {
                            var result = [];
                            if (object != null) {
                                for (var key in Object(object)) {
                                    result.push(key);
                                }
                            }
                            return result;
                        }

                        /**
                         * Converts `value` to a string using `Object.prototype.toString`.
                         *
                         * @private
                         * @param {*} value The value to convert.
                         * @returns {string} Returns the converted string.
                         */
                        function objectToString(value) {
                            return nativeObjectToString.call(value);
                        }

                        /**
                         * A specialized version of `baseRest` which transforms the rest array.
                         *
                         * @private
                         * @param {Function} func The function to apply a rest parameter to.
                         * @param {number} [start=func.length-1] The start position of the rest parameter.
                         * @param {Function} transform The rest array transform.
                         * @returns {Function} Returns the new function.
                         */
                        function overRest(func, start, transform) {
                            start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
                            return function () {
                                var args = arguments,
                                    index = -1,
                                    length = nativeMax(args.length - start, 0),
                                    array = Array(length);

                                while (++index < length) {
                                    array[index] = args[start + index];
                                }
                                index = -1;
                                var otherArgs = Array(start + 1);
                                while (++index < start) {
                                    otherArgs[index] = args[index];
                                }
                                otherArgs[start] = transform(array);
                                return apply(func, this, otherArgs);
                            };
                        }

                        /**
                         * Gets the parent value at `path` of `object`.
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @param {Array} path The path to get the parent value of.
                         * @returns {*} Returns the parent value.
                         */
                        function parent(object, path) {
                            return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
                        }

                        /**
                         * Reorder `array` according to the specified indexes where the element at
                         * the first index is assigned as the first element, the element at
                         * the second index is assigned as the second element, and so on.
                         *
                         * @private
                         * @param {Array} array The array to reorder.
                         * @param {Array} indexes The arranged array indexes.
                         * @returns {Array} Returns `array`.
                         */
                        function reorder(array, indexes) {
                            var arrLength = array.length,
                                length = nativeMin(indexes.length, arrLength),
                                oldArray = copyArray(array);

                            while (length--) {
                                var index = indexes[length];
                                array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
                            }
                            return array;
                        }

                        /**
                         * Gets the value at `key`, unless `key` is "__proto__" or "constructor".
                         *
                         * @private
                         * @param {Object} object The object to query.
                         * @param {string} key The key of the property to get.
                         * @returns {*} Returns the property value.
                         */
                        function safeGet(object, key) {
                            if (key === 'constructor' && typeof object[key] === 'function') {
                                return;
                            }

                            if (key == '__proto__') {
                                return;
                            }

                            return object[key];
                        }

                        /**
                         * Sets metadata for `func`.
                         *
                         * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
                         * period of time, it will trip its breaker and transition to an identity
                         * function to avoid garbage collection pauses in V8. See
                         * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
                         * for more details.
                         *
                         * @private
                         * @param {Function} func The function to associate metadata with.
                         * @param {*} data The metadata.
                         * @returns {Function} Returns `func`.
                         */
                        var setData = shortOut(baseSetData);

                        /**
                         * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
                         *
                         * @private
                         * @param {Function} func The function to delay.
                         * @param {number} wait The number of milliseconds to delay invocation.
                         * @returns {number|Object} Returns the timer id or timeout object.
                         */
                        var setTimeout = ctxSetTimeout || function (func, wait) {
                            return root.setTimeout(func, wait);
                        };

                        /**
                         * Sets the `toString` method of `func` to return `string`.
                         *
                         * @private
                         * @param {Function} func The function to modify.
                         * @param {Function} string The `toString` result.
                         * @returns {Function} Returns `func`.
                         */
                        var setToString = shortOut(baseSetToString);

                        /**
                         * Sets the `toString` method of `wrapper` to mimic the source of `reference`
                         * with wrapper details in a comment at the top of the source body.
                         *
                         * @private
                         * @param {Function} wrapper The function to modify.
                         * @param {Function} reference The reference function.
                         * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
                         * @returns {Function} Returns `wrapper`.
                         */
                        function setWrapToString(wrapper, reference, bitmask) {
                            var source = (reference + '');
                            return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
                        }

                        /**
                         * Creates a function that'll short out and invoke `identity` instead
                         * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
                         * milliseconds.
                         *
                         * @private
                         * @param {Function} func The function to restrict.
                         * @returns {Function} Returns the new shortable function.
                         */
                        function shortOut(func) {
                            var count = 0,
                                lastCalled = 0;

                            return function () {
                                var stamp = nativeNow(),
                                    remaining = HOT_SPAN - (stamp - lastCalled);

                                lastCalled = stamp;
                                if (remaining > 0) {
                                    if (++count >= HOT_COUNT) {
                                        return arguments[0];
                                    }
                                } else {
                                    count = 0;
                                }
                                return func.apply(undefined, arguments);
                            };
                        }

                        /**
                         * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
                         *
                         * @private
                         * @param {Array} array The array to shuffle.
                         * @param {number} [size=array.length] The size of `array`.
                         * @returns {Array} Returns `array`.
                         */
                        function shuffleSelf(array, size) {
                            var index = -1,
                                length = array.length,
                                lastIndex = length - 1;

                            size = size === undefined ? length : size;
                            while (++index < size) {
                                var rand = baseRandom(index, lastIndex),
                                    value = array[rand];

                                array[rand] = array[index];
                                array[index] = value;
                            }
                            array.length = size;
                            return array;
                        }

                        /**
                         * Converts `string` to a property path array.
                         *
                         * @private
                         * @param {string} string The string to convert.
                         * @returns {Array} Returns the property path array.
                         */
                        var stringToPath = memoizeCapped(function (string) {
                            var result = [];
                            if (string.charCodeAt(0) === 46 /* . */) {
                                result.push('');
                            }
                            string.replace(rePropName, function (match, number, quote, subString) {
                                result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
                            });
                            return result;
                        });

                        /**
                         * Converts `value` to a string key if it's not a string or symbol.
                         *
                         * @private
                         * @param {*} value The value to inspect.
                         * @returns {string|symbol} Returns the key.
                         */
                        function toKey(value) {
                            if (typeof value == 'string' || isSymbol(value)) {
                                return value;
                            }
                            var result = (value + '');
                            return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
                        }

                        /**
                         * Converts `func` to its source code.
                         *
                         * @private
                         * @param {Function} func The function to convert.
                         * @returns {string} Returns the source code.
                         */
                        function toSource(func) {
                            if (func != null) {
                                try {
                                    return funcToString.call(func);
                                } catch (e) {
                                }
                                try {
                                    return (func + '');
                                } catch (e) {
                                }
                            }
                            return '';
                        }

                        /**
                         * Updates wrapper `details` based on `bitmask` flags.
                         *
                         * @private
                         * @returns {Array} details The details to modify.
                         * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
                         * @returns {Array} Returns `details`.
                         */
                        function updateWrapDetails(details, bitmask) {
                            arrayEach(wrapFlags, function (pair) {
                                var value = '_.' + pair[0];
                                if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {
                                    details.push(value);
                                }
                            });
                            return details.sort();
                        }

                        /**
                         * Creates a clone of `wrapper`.
                         *
                         * @private
                         * @param {Object} wrapper The wrapper to clone.
                         * @returns {Object} Returns the cloned wrapper.
                         */
                        function wrapperClone(wrapper) {
                            if (wrapper instanceof LazyWrapper) {
                                return wrapper.clone();
                            }
                            var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
                            result.__actions__ = copyArray(wrapper.__actions__);
                            result.__index__ = wrapper.__index__;
                            result.__values__ = wrapper.__values__;
                            return result;
                        }

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates an array of elements split into groups the length of `size`.
                         * If `array` can't be split evenly, the final chunk will be the remaining
                         * elements.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to process.
                         * @param {number} [size=1] The length of each chunk
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Array} Returns the new array of chunks.
                         * @example
                         *
                         * _.chunk(['a', 'b', 'c', 'd'], 2);
                         * // => [['a', 'b'], ['c', 'd']]
                         *
                         * _.chunk(['a', 'b', 'c', 'd'], 3);
                         * // => [['a', 'b', 'c'], ['d']]
                         */
                        function chunk(array, size, guard) {
                            if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {
                                size = 1;
                            } else {
                                size = nativeMax(toInteger(size), 0);
                            }
                            var length = array == null ? 0 : array.length;
                            if (!length || size < 1) {
                                return [];
                            }
                            var index = 0,
                                resIndex = 0,
                                result = Array(nativeCeil(length / size));

                            while (index < length) {
                                result[resIndex++] = baseSlice(array, index, (index += size));
                            }
                            return result;
                        }

                        /**
                         * Creates an array with all falsey values removed. The values `false`, `null`,
                         * `0`, `""`, `undefined`, and `NaN` are falsey.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to compact.
                         * @returns {Array} Returns the new array of filtered values.
                         * @example
                         *
                         * _.compact([0, 1, false, 2, '', 3]);
                         * // => [1, 2, 3]
                         */
                        function compact(array) {
                            var index = -1,
                                length = array == null ? 0 : array.length,
                                resIndex = 0,
                                result = [];

                            while (++index < length) {
                                var value = array[index];
                                if (value) {
                                    result[resIndex++] = value;
                                }
                            }
                            return result;
                        }

                        /**
                         * Creates a new array concatenating `array` with any additional arrays
                         * and/or values.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to concatenate.
                         * @param {...*} [values] The values to concatenate.
                         * @returns {Array} Returns the new concatenated array.
                         * @example
                         *
                         * var array = [1];
                         * var other = _.concat(array, 2, [3], [[4]]);
                         *
                         * console.log(other);
                         * // => [1, 2, 3, [4]]
                         *
                         * console.log(array);
                         * // => [1]
                         */
                        function concat() {
                            var length = arguments.length;
                            if (!length) {
                                return [];
                            }
                            var args = Array(length - 1),
                                array = arguments[0],
                                index = length;

                            while (index--) {
                                args[index - 1] = arguments[index];
                            }
                            return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
                        }

                        /**
                         * Creates an array of `array` values not included in the other given arrays
                         * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * for equality comparisons. The order and references of result values are
                         * determined by the first array.
                         *
                         * **Note:** Unlike `_.pullAll`, this method returns a new array.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {...Array} [values] The values to exclude.
                         * @returns {Array} Returns the new array of filtered values.
                         * @see _.without, _.xor
                         * @example
                         *
                         * _.difference([2, 1], [2, 3]);
                         * // => [1]
                         */
                        var difference = baseRest(function (array, values) {
                            return isArrayLikeObject(array)
                                ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
                                : [];
                        });

                        /**
                         * This method is like `_.difference` except that it accepts `iteratee` which
                         * is invoked for each element of `array` and `values` to generate the criterion
                         * by which they're compared. The order and references of result values are
                         * determined by the first array. The iteratee is invoked with one argument:
                         * (value).
                         *
                         * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {...Array} [values] The values to exclude.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {Array} Returns the new array of filtered values.
                         * @example
                         *
                         * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
                         * // => [1.2]
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
                         * // => [{ 'x': 2 }]
                         */
                        var differenceBy = baseRest(function (array, values) {
                            var iteratee = last(values);
                            if (isArrayLikeObject(iteratee)) {
                                iteratee = undefined;
                            }
                            return isArrayLikeObject(array)
                                ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))
                                : [];
                        });

                        /**
                         * This method is like `_.difference` except that it accepts `comparator`
                         * which is invoked to compare elements of `array` to `values`. The order and
                         * references of result values are determined by the first array. The comparator
                         * is invoked with two arguments: (arrVal, othVal).
                         *
                         * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {...Array} [values] The values to exclude.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns the new array of filtered values.
                         * @example
                         *
                         * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
                         *
                         * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
                         * // => [{ 'x': 2, 'y': 1 }]
                         */
                        var differenceWith = baseRest(function (array, values) {
                            var comparator = last(values);
                            if (isArrayLikeObject(comparator)) {
                                comparator = undefined;
                            }
                            return isArrayLikeObject(array)
                                ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
                                : [];
                        });

                        /**
                         * Creates a slice of `array` with `n` elements dropped from the beginning.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.5.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @param {number} [n=1] The number of elements to drop.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * _.drop([1, 2, 3]);
                         * // => [2, 3]
                         *
                         * _.drop([1, 2, 3], 2);
                         * // => [3]
                         *
                         * _.drop([1, 2, 3], 5);
                         * // => []
                         *
                         * _.drop([1, 2, 3], 0);
                         * // => [1, 2, 3]
                         */
                        function drop(array, n, guard) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return [];
                            }
                            n = (guard || n === undefined) ? 1 : toInteger(n);
                            return baseSlice(array, n < 0 ? 0 : n, length);
                        }

                        /**
                         * Creates a slice of `array` with `n` elements dropped from the end.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @param {number} [n=1] The number of elements to drop.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * _.dropRight([1, 2, 3]);
                         * // => [1, 2]
                         *
                         * _.dropRight([1, 2, 3], 2);
                         * // => [1]
                         *
                         * _.dropRight([1, 2, 3], 5);
                         * // => []
                         *
                         * _.dropRight([1, 2, 3], 0);
                         * // => [1, 2, 3]
                         */
                        function dropRight(array, n, guard) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return [];
                            }
                            n = (guard || n === undefined) ? 1 : toInteger(n);
                            n = length - n;
                            return baseSlice(array, 0, n < 0 ? 0 : n);
                        }

                        /**
                         * Creates a slice of `array` excluding elements dropped from the end.
                         * Elements are dropped until `predicate` returns falsey. The predicate is
                         * invoked with three arguments: (value, index, array).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney',  'active': true },
                         *   { 'user': 'fred',    'active': false },
                         *   { 'user': 'pebbles', 'active': false }
                         * ];
                         *
                         * _.dropRightWhile(users, function(o) { return !o.active; });
                         * // => objects for ['barney']
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
                         * // => objects for ['barney', 'fred']
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.dropRightWhile(users, ['active', false]);
                         * // => objects for ['barney']
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.dropRightWhile(users, 'active');
                         * // => objects for ['barney', 'fred', 'pebbles']
                         */
                        function dropRightWhile(array, predicate) {
                            return (array && array.length)
                                ? baseWhile(array, getIteratee(predicate, 3), true, true)
                                : [];
                        }

                        /**
                         * Creates a slice of `array` excluding elements dropped from the beginning.
                         * Elements are dropped until `predicate` returns falsey. The predicate is
                         * invoked with three arguments: (value, index, array).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney',  'active': false },
                         *   { 'user': 'fred',    'active': false },
                         *   { 'user': 'pebbles', 'active': true }
                         * ];
                         *
                         * _.dropWhile(users, function(o) { return !o.active; });
                         * // => objects for ['pebbles']
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.dropWhile(users, { 'user': 'barney', 'active': false });
                         * // => objects for ['fred', 'pebbles']
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.dropWhile(users, ['active', false]);
                         * // => objects for ['pebbles']
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.dropWhile(users, 'active');
                         * // => objects for ['barney', 'fred', 'pebbles']
                         */
                        function dropWhile(array, predicate) {
                            return (array && array.length)
                                ? baseWhile(array, getIteratee(predicate, 3), true)
                                : [];
                        }

                        /**
                         * Fills elements of `array` with `value` from `start` up to, but not
                         * including, `end`.
                         *
                         * **Note:** This method mutates `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.2.0
                         * @category Array
                         * @param {Array} array The array to fill.
                         * @param {*} value The value to fill `array` with.
                         * @param {number} [start=0] The start position.
                         * @param {number} [end=array.length] The end position.
                         * @returns {Array} Returns `array`.
                         * @example
                         *
                         * var array = [1, 2, 3];
                         *
                         * _.fill(array, 'a');
                         * console.log(array);
                         * // => ['a', 'a', 'a']
                         *
                         * _.fill(Array(3), 2);
                         * // => [2, 2, 2]
                         *
                         * _.fill([4, 6, 8, 10], '*', 1, 3);
                         * // => [4, '*', '*', 10]
                         */
                        function fill(array, value, start, end) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return [];
                            }
                            if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
                                start = 0;
                                end = length;
                            }
                            return baseFill(array, value, start, end);
                        }

                        /**
                         * This method is like `_.find` except that it returns the index of the first
                         * element `predicate` returns truthy for instead of the element itself.
                         *
                         * @static
                         * @memberOf _
                         * @since 1.1.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @param {number} [fromIndex=0] The index to search from.
                         * @returns {number} Returns the index of the found element, else `-1`.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney',  'active': false },
                         *   { 'user': 'fred',    'active': false },
                         *   { 'user': 'pebbles', 'active': true }
                         * ];
                         *
                         * _.findIndex(users, function(o) { return o.user == 'barney'; });
                         * // => 0
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.findIndex(users, { 'user': 'fred', 'active': false });
                         * // => 1
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.findIndex(users, ['active', false]);
                         * // => 0
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.findIndex(users, 'active');
                         * // => 2
                         */
                        function findIndex(array, predicate, fromIndex) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return -1;
                            }
                            var index = fromIndex == null ? 0 : toInteger(fromIndex);
                            if (index < 0) {
                                index = nativeMax(length + index, 0);
                            }
                            return baseFindIndex(array, getIteratee(predicate, 3), index);
                        }

                        /**
                         * This method is like `_.findIndex` except that it iterates over elements
                         * of `collection` from right to left.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @param {number} [fromIndex=array.length-1] The index to search from.
                         * @returns {number} Returns the index of the found element, else `-1`.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney',  'active': true },
                         *   { 'user': 'fred',    'active': false },
                         *   { 'user': 'pebbles', 'active': false }
                         * ];
                         *
                         * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
                         * // => 2
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.findLastIndex(users, { 'user': 'barney', 'active': true });
                         * // => 0
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.findLastIndex(users, ['active', false]);
                         * // => 2
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.findLastIndex(users, 'active');
                         * // => 0
                         */
                        function findLastIndex(array, predicate, fromIndex) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return -1;
                            }
                            var index = length - 1;
                            if (fromIndex !== undefined) {
                                index = toInteger(fromIndex);
                                index = fromIndex < 0
                                    ? nativeMax(length + index, 0)
                                    : nativeMin(index, length - 1);
                            }
                            return baseFindIndex(array, getIteratee(predicate, 3), index, true);
                        }

                        /**
                         * Flattens `array` a single level deep.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to flatten.
                         * @returns {Array} Returns the new flattened array.
                         * @example
                         *
                         * _.flatten([1, [2, [3, [4]], 5]]);
                         * // => [1, 2, [3, [4]], 5]
                         */
                        function flatten(array) {
                            var length = array == null ? 0 : array.length;
                            return length ? baseFlatten(array, 1) : [];
                        }

                        /**
                         * Recursively flattens `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to flatten.
                         * @returns {Array} Returns the new flattened array.
                         * @example
                         *
                         * _.flattenDeep([1, [2, [3, [4]], 5]]);
                         * // => [1, 2, 3, 4, 5]
                         */
                        function flattenDeep(array) {
                            var length = array == null ? 0 : array.length;
                            return length ? baseFlatten(array, INFINITY) : [];
                        }

                        /**
                         * Recursively flatten `array` up to `depth` times.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.4.0
                         * @category Array
                         * @param {Array} array The array to flatten.
                         * @param {number} [depth=1] The maximum recursion depth.
                         * @returns {Array} Returns the new flattened array.
                         * @example
                         *
                         * var array = [1, [2, [3, [4]], 5]];
                         *
                         * _.flattenDepth(array, 1);
                         * // => [1, 2, [3, [4]], 5]
                         *
                         * _.flattenDepth(array, 2);
                         * // => [1, 2, 3, [4], 5]
                         */
                        function flattenDepth(array, depth) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return [];
                            }
                            depth = depth === undefined ? 1 : toInteger(depth);
                            return baseFlatten(array, depth);
                        }

                        /**
                         * The inverse of `_.toPairs`; this method returns an object composed
                         * from key-value `pairs`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} pairs The key-value pairs.
                         * @returns {Object} Returns the new object.
                         * @example
                         *
                         * _.fromPairs([['a', 1], ['b', 2]]);
                         * // => { 'a': 1, 'b': 2 }
                         */
                        function fromPairs(pairs) {
                            var index = -1,
                                length = pairs == null ? 0 : pairs.length,
                                result = {};

                            while (++index < length) {
                                var pair = pairs[index];
                                result[pair[0]] = pair[1];
                            }
                            return result;
                        }

                        /**
                         * Gets the first element of `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @alias first
                         * @category Array
                         * @param {Array} array The array to query.
                         * @returns {*} Returns the first element of `array`.
                         * @example
                         *
                         * _.head([1, 2, 3]);
                         * // => 1
                         *
                         * _.head([]);
                         * // => undefined
                         */
                        function head(array) {
                            return (array && array.length) ? array[0] : undefined;
                        }

                        /**
                         * Gets the index at which the first occurrence of `value` is found in `array`
                         * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * for equality comparisons. If `fromIndex` is negative, it's used as the
                         * offset from the end of `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {*} value The value to search for.
                         * @param {number} [fromIndex=0] The index to search from.
                         * @returns {number} Returns the index of the matched value, else `-1`.
                         * @example
                         *
                         * _.indexOf([1, 2, 1, 2], 2);
                         * // => 1
                         *
                         * // Search from the `fromIndex`.
                         * _.indexOf([1, 2, 1, 2], 2, 2);
                         * // => 3
                         */
                        function indexOf(array, value, fromIndex) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return -1;
                            }
                            var index = fromIndex == null ? 0 : toInteger(fromIndex);
                            if (index < 0) {
                                index = nativeMax(length + index, 0);
                            }
                            return baseIndexOf(array, value, index);
                        }

                        /**
                         * Gets all but the last element of `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * _.initial([1, 2, 3]);
                         * // => [1, 2]
                         */
                        function initial(array) {
                            var length = array == null ? 0 : array.length;
                            return length ? baseSlice(array, 0, -1) : [];
                        }

                        /**
                         * Creates an array of unique values that are included in all given arrays
                         * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * for equality comparisons. The order and references of result values are
                         * determined by the first array.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to inspect.
                         * @returns {Array} Returns the new array of intersecting values.
                         * @example
                         *
                         * _.intersection([2, 1], [2, 3]);
                         * // => [2]
                         */
                        var intersection = baseRest(function (arrays) {
                            var mapped = arrayMap(arrays, castArrayLikeObject);
                            return (mapped.length && mapped[0] === arrays[0])
                                ? baseIntersection(mapped)
                                : [];
                        });

                        /**
                         * This method is like `_.intersection` except that it accepts `iteratee`
                         * which is invoked for each element of each `arrays` to generate the criterion
                         * by which they're compared. The order and references of result values are
                         * determined by the first array. The iteratee is invoked with one argument:
                         * (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to inspect.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {Array} Returns the new array of intersecting values.
                         * @example
                         *
                         * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
                         * // => [2.1]
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
                         * // => [{ 'x': 1 }]
                         */
                        var intersectionBy = baseRest(function (arrays) {
                            var iteratee = last(arrays),
                                mapped = arrayMap(arrays, castArrayLikeObject);

                            if (iteratee === last(mapped)) {
                                iteratee = undefined;
                            } else {
                                mapped.pop();
                            }
                            return (mapped.length && mapped[0] === arrays[0])
                                ? baseIntersection(mapped, getIteratee(iteratee, 2))
                                : [];
                        });

                        /**
                         * This method is like `_.intersection` except that it accepts `comparator`
                         * which is invoked to compare elements of `arrays`. The order and references
                         * of result values are determined by the first array. The comparator is
                         * invoked with two arguments: (arrVal, othVal).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to inspect.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns the new array of intersecting values.
                         * @example
                         *
                         * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
                         * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
                         *
                         * _.intersectionWith(objects, others, _.isEqual);
                         * // => [{ 'x': 1, 'y': 2 }]
                         */
                        var intersectionWith = baseRest(function (arrays) {
                            var comparator = last(arrays),
                                mapped = arrayMap(arrays, castArrayLikeObject);

                            comparator = typeof comparator == 'function' ? comparator : undefined;
                            if (comparator) {
                                mapped.pop();
                            }
                            return (mapped.length && mapped[0] === arrays[0])
                                ? baseIntersection(mapped, undefined, comparator)
                                : [];
                        });

                        /**
                         * Converts all elements in `array` into a string separated by `separator`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to convert.
                         * @param {string} [separator=','] The element separator.
                         * @returns {string} Returns the joined string.
                         * @example
                         *
                         * _.join(['a', 'b', 'c'], '~');
                         * // => 'a~b~c'
                         */
                        function join(array, separator) {
                            return array == null ? '' : nativeJoin.call(array, separator);
                        }

                        /**
                         * Gets the last element of `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @returns {*} Returns the last element of `array`.
                         * @example
                         *
                         * _.last([1, 2, 3]);
                         * // => 3
                         */
                        function last(array) {
                            var length = array == null ? 0 : array.length;
                            return length ? array[length - 1] : undefined;
                        }

                        /**
                         * This method is like `_.indexOf` except that it iterates over elements of
                         * `array` from right to left.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {*} value The value to search for.
                         * @param {number} [fromIndex=array.length-1] The index to search from.
                         * @returns {number} Returns the index of the matched value, else `-1`.
                         * @example
                         *
                         * _.lastIndexOf([1, 2, 1, 2], 2);
                         * // => 3
                         *
                         * // Search from the `fromIndex`.
                         * _.lastIndexOf([1, 2, 1, 2], 2, 2);
                         * // => 1
                         */
                        function lastIndexOf(array, value, fromIndex) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return -1;
                            }
                            var index = length;
                            if (fromIndex !== undefined) {
                                index = toInteger(fromIndex);
                                index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
                            }
                            return value === value
                                ? strictLastIndexOf(array, value, index)
                                : baseFindIndex(array, baseIsNaN, index, true);
                        }

                        /**
                         * Gets the element at index `n` of `array`. If `n` is negative, the nth
                         * element from the end is returned.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.11.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @param {number} [n=0] The index of the element to return.
                         * @returns {*} Returns the nth element of `array`.
                         * @example
                         *
                         * var array = ['a', 'b', 'c', 'd'];
                         *
                         * _.nth(array, 1);
                         * // => 'b'
                         *
                         * _.nth(array, -2);
                         * // => 'c';
                         */
                        function nth(array, n) {
                            return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;
                        }

                        /**
                         * Removes all given values from `array` using
                         * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * for equality comparisons.
                         *
                         * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
                         * to remove elements from an array by predicate.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @category Array
                         * @param {Array} array The array to modify.
                         * @param {...*} [values] The values to remove.
                         * @returns {Array} Returns `array`.
                         * @example
                         *
                         * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
                         *
                         * _.pull(array, 'a', 'c');
                         * console.log(array);
                         * // => ['b', 'b']
                         */
                        var pull = baseRest(pullAll);

                        /**
                         * This method is like `_.pull` except that it accepts an array of values to remove.
                         *
                         * **Note:** Unlike `_.difference`, this method mutates `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to modify.
                         * @param {Array} values The values to remove.
                         * @returns {Array} Returns `array`.
                         * @example
                         *
                         * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
                         *
                         * _.pullAll(array, ['a', 'c']);
                         * console.log(array);
                         * // => ['b', 'b']
                         */
                        function pullAll(array, values) {
                            return (array && array.length && values && values.length)
                                ? basePullAll(array, values)
                                : array;
                        }

                        /**
                         * This method is like `_.pullAll` except that it accepts `iteratee` which is
                         * invoked for each element of `array` and `values` to generate the criterion
                         * by which they're compared. The iteratee is invoked with one argument: (value).
                         *
                         * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to modify.
                         * @param {Array} values The values to remove.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {Array} Returns `array`.
                         * @example
                         *
                         * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
                         *
                         * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
                         * console.log(array);
                         * // => [{ 'x': 2 }]
                         */
                        function pullAllBy(array, values, iteratee) {
                            return (array && array.length && values && values.length)
                                ? basePullAll(array, values, getIteratee(iteratee, 2))
                                : array;
                        }

                        /**
                         * This method is like `_.pullAll` except that it accepts `comparator` which
                         * is invoked to compare elements of `array` to `values`. The comparator is
                         * invoked with two arguments: (arrVal, othVal).
                         *
                         * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.6.0
                         * @category Array
                         * @param {Array} array The array to modify.
                         * @param {Array} values The values to remove.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns `array`.
                         * @example
                         *
                         * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
                         *
                         * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
                         * console.log(array);
                         * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
                         */
                        function pullAllWith(array, values, comparator) {
                            return (array && array.length && values && values.length)
                                ? basePullAll(array, values, undefined, comparator)
                                : array;
                        }

                        /**
                         * Removes elements from `array` corresponding to `indexes` and returns an
                         * array of removed elements.
                         *
                         * **Note:** Unlike `_.at`, this method mutates `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to modify.
                         * @param {...(number|number[])} [indexes] The indexes of elements to remove.
                         * @returns {Array} Returns the new array of removed elements.
                         * @example
                         *
                         * var array = ['a', 'b', 'c', 'd'];
                         * var pulled = _.pullAt(array, [1, 3]);
                         *
                         * console.log(array);
                         * // => ['a', 'c']
                         *
                         * console.log(pulled);
                         * // => ['b', 'd']
                         */
                        var pullAt = flatRest(function (array, indexes) {
                            var length = array == null ? 0 : array.length,
                                result = baseAt(array, indexes);

                            basePullAt(array, arrayMap(indexes, function (index) {
                                return isIndex(index, length) ? +index : index;
                            }).sort(compareAscending));

                            return result;
                        });

                        /**
                         * Removes all elements from `array` that `predicate` returns truthy for
                         * and returns an array of the removed elements. The predicate is invoked
                         * with three arguments: (value, index, array).
                         *
                         * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
                         * to pull elements from an array by value.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @category Array
                         * @param {Array} array The array to modify.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the new array of removed elements.
                         * @example
                         *
                         * var array = [1, 2, 3, 4];
                         * var evens = _.remove(array, function(n) {
                         *   return n % 2 == 0;
                         * });
                         *
                         * console.log(array);
                         * // => [1, 3]
                         *
                         * console.log(evens);
                         * // => [2, 4]
                         */
                        function remove(array, predicate) {
                            var result = [];
                            if (!(array && array.length)) {
                                return result;
                            }
                            var index = -1,
                                indexes = [],
                                length = array.length;

                            predicate = getIteratee(predicate, 3);
                            while (++index < length) {
                                var value = array[index];
                                if (predicate(value, index, array)) {
                                    result.push(value);
                                    indexes.push(index);
                                }
                            }
                            basePullAt(array, indexes);
                            return result;
                        }

                        /**
                         * Reverses `array` so that the first element becomes the last, the second
                         * element becomes the second to last, and so on.
                         *
                         * **Note:** This method mutates `array` and is based on
                         * [`Array#reverse`](https://mdn.io/Array/reverse).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to modify.
                         * @returns {Array} Returns `array`.
                         * @example
                         *
                         * var array = [1, 2, 3];
                         *
                         * _.reverse(array);
                         * // => [3, 2, 1]
                         *
                         * console.log(array);
                         * // => [3, 2, 1]
                         */
                        function reverse(array) {
                            return array == null ? array : nativeReverse.call(array);
                        }

                        /**
                         * Creates a slice of `array` from `start` up to, but not including, `end`.
                         *
                         * **Note:** This method is used instead of
                         * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
                         * returned.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to slice.
                         * @param {number} [start=0] The start position.
                         * @param {number} [end=array.length] The end position.
                         * @returns {Array} Returns the slice of `array`.
                         */
                        function slice(array, start, end) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return [];
                            }
                            if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
                                start = 0;
                                end = length;
                            } else {
                                start = start == null ? 0 : toInteger(start);
                                end = end === undefined ? length : toInteger(end);
                            }
                            return baseSlice(array, start, end);
                        }

                        /**
                         * Uses a binary search to determine the lowest index at which `value`
                         * should be inserted into `array` in order to maintain its sort order.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The sorted array to inspect.
                         * @param {*} value The value to evaluate.
                         * @returns {number} Returns the index at which `value` should be inserted
                         *  into `array`.
                         * @example
                         *
                         * _.sortedIndex([30, 50], 40);
                         * // => 1
                         */
                        function sortedIndex(array, value) {
                            return baseSortedIndex(array, value);
                        }

                        /**
                         * This method is like `_.sortedIndex` except that it accepts `iteratee`
                         * which is invoked for `value` and each element of `array` to compute their
                         * sort ranking. The iteratee is invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The sorted array to inspect.
                         * @param {*} value The value to evaluate.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {number} Returns the index at which `value` should be inserted
                         *  into `array`.
                         * @example
                         *
                         * var objects = [{ 'x': 4 }, { 'x': 5 }];
                         *
                         * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
                         * // => 0
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
                         * // => 0
                         */
                        function sortedIndexBy(array, value, iteratee) {
                            return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
                        }

                        /**
                         * This method is like `_.indexOf` except that it performs a binary
                         * search on a sorted `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {*} value The value to search for.
                         * @returns {number} Returns the index of the matched value, else `-1`.
                         * @example
                         *
                         * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
                         * // => 1
                         */
                        function sortedIndexOf(array, value) {
                            var length = array == null ? 0 : array.length;
                            if (length) {
                                var index = baseSortedIndex(array, value);
                                if (index < length && eq(array[index], value)) {
                                    return index;
                                }
                            }
                            return -1;
                        }

                        /**
                         * This method is like `_.sortedIndex` except that it returns the highest
                         * index at which `value` should be inserted into `array` in order to
                         * maintain its sort order.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The sorted array to inspect.
                         * @param {*} value The value to evaluate.
                         * @returns {number} Returns the index at which `value` should be inserted
                         *  into `array`.
                         * @example
                         *
                         * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
                         * // => 4
                         */
                        function sortedLastIndex(array, value) {
                            return baseSortedIndex(array, value, true);
                        }

                        /**
                         * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
                         * which is invoked for `value` and each element of `array` to compute their
                         * sort ranking. The iteratee is invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The sorted array to inspect.
                         * @param {*} value The value to evaluate.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {number} Returns the index at which `value` should be inserted
                         *  into `array`.
                         * @example
                         *
                         * var objects = [{ 'x': 4 }, { 'x': 5 }];
                         *
                         * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
                         * // => 1
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
                         * // => 1
                         */
                        function sortedLastIndexBy(array, value, iteratee) {
                            return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
                        }

                        /**
                         * This method is like `_.lastIndexOf` except that it performs a binary
                         * search on a sorted `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {*} value The value to search for.
                         * @returns {number} Returns the index of the matched value, else `-1`.
                         * @example
                         *
                         * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
                         * // => 3
                         */
                        function sortedLastIndexOf(array, value) {
                            var length = array == null ? 0 : array.length;
                            if (length) {
                                var index = baseSortedIndex(array, value, true) - 1;
                                if (eq(array[index], value)) {
                                    return index;
                                }
                            }
                            return -1;
                        }

                        /**
                         * This method is like `_.uniq` except that it's designed and optimized
                         * for sorted arrays.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @returns {Array} Returns the new duplicate free array.
                         * @example
                         *
                         * _.sortedUniq([1, 1, 2]);
                         * // => [1, 2]
                         */
                        function sortedUniq(array) {
                            return (array && array.length)
                                ? baseSortedUniq(array)
                                : [];
                        }

                        /**
                         * This method is like `_.uniqBy` except that it's designed and optimized
                         * for sorted arrays.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {Function} [iteratee] The iteratee invoked per element.
                         * @returns {Array} Returns the new duplicate free array.
                         * @example
                         *
                         * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
                         * // => [1.1, 2.3]
                         */
                        function sortedUniqBy(array, iteratee) {
                            return (array && array.length)
                                ? baseSortedUniq(array, getIteratee(iteratee, 2))
                                : [];
                        }

                        /**
                         * Gets all but the first element of `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * _.tail([1, 2, 3]);
                         * // => [2, 3]
                         */
                        function tail(array) {
                            var length = array == null ? 0 : array.length;
                            return length ? baseSlice(array, 1, length) : [];
                        }

                        /**
                         * Creates a slice of `array` with `n` elements taken from the beginning.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @param {number} [n=1] The number of elements to take.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * _.take([1, 2, 3]);
                         * // => [1]
                         *
                         * _.take([1, 2, 3], 2);
                         * // => [1, 2]
                         *
                         * _.take([1, 2, 3], 5);
                         * // => [1, 2, 3]
                         *
                         * _.take([1, 2, 3], 0);
                         * // => []
                         */
                        function take(array, n, guard) {
                            if (!(array && array.length)) {
                                return [];
                            }
                            n = (guard || n === undefined) ? 1 : toInteger(n);
                            return baseSlice(array, 0, n < 0 ? 0 : n);
                        }

                        /**
                         * Creates a slice of `array` with `n` elements taken from the end.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @param {number} [n=1] The number of elements to take.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * _.takeRight([1, 2, 3]);
                         * // => [3]
                         *
                         * _.takeRight([1, 2, 3], 2);
                         * // => [2, 3]
                         *
                         * _.takeRight([1, 2, 3], 5);
                         * // => [1, 2, 3]
                         *
                         * _.takeRight([1, 2, 3], 0);
                         * // => []
                         */
                        function takeRight(array, n, guard) {
                            var length = array == null ? 0 : array.length;
                            if (!length) {
                                return [];
                            }
                            n = (guard || n === undefined) ? 1 : toInteger(n);
                            n = length - n;
                            return baseSlice(array, n < 0 ? 0 : n, length);
                        }

                        /**
                         * Creates a slice of `array` with elements taken from the end. Elements are
                         * taken until `predicate` returns falsey. The predicate is invoked with
                         * three arguments: (value, index, array).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney',  'active': true },
                         *   { 'user': 'fred',    'active': false },
                         *   { 'user': 'pebbles', 'active': false }
                         * ];
                         *
                         * _.takeRightWhile(users, function(o) { return !o.active; });
                         * // => objects for ['fred', 'pebbles']
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
                         * // => objects for ['pebbles']
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.takeRightWhile(users, ['active', false]);
                         * // => objects for ['fred', 'pebbles']
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.takeRightWhile(users, 'active');
                         * // => []
                         */
                        function takeRightWhile(array, predicate) {
                            return (array && array.length)
                                ? baseWhile(array, getIteratee(predicate, 3), false, true)
                                : [];
                        }

                        /**
                         * Creates a slice of `array` with elements taken from the beginning. Elements
                         * are taken until `predicate` returns falsey. The predicate is invoked with
                         * three arguments: (value, index, array).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Array
                         * @param {Array} array The array to query.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the slice of `array`.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney',  'active': false },
                         *   { 'user': 'fred',    'active': false },
                         *   { 'user': 'pebbles', 'active': true }
                         * ];
                         *
                         * _.takeWhile(users, function(o) { return !o.active; });
                         * // => objects for ['barney', 'fred']
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.takeWhile(users, { 'user': 'barney', 'active': false });
                         * // => objects for ['barney']
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.takeWhile(users, ['active', false]);
                         * // => objects for ['barney', 'fred']
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.takeWhile(users, 'active');
                         * // => []
                         */
                        function takeWhile(array, predicate) {
                            return (array && array.length)
                                ? baseWhile(array, getIteratee(predicate, 3))
                                : [];
                        }

                        /**
                         * Creates an array of unique values, in order, from all given arrays using
                         * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * for equality comparisons.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to inspect.
                         * @returns {Array} Returns the new array of combined values.
                         * @example
                         *
                         * _.union([2], [1, 2]);
                         * // => [2, 1]
                         */
                        var union = baseRest(function (arrays) {
                            return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
                        });

                        /**
                         * This method is like `_.union` except that it accepts `iteratee` which is
                         * invoked for each element of each `arrays` to generate the criterion by
                         * which uniqueness is computed. Result values are chosen from the first
                         * array in which the value occurs. The iteratee is invoked with one argument:
                         * (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to inspect.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {Array} Returns the new array of combined values.
                         * @example
                         *
                         * _.unionBy([2.1], [1.2, 2.3], Math.floor);
                         * // => [2.1, 1.2]
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
                         * // => [{ 'x': 1 }, { 'x': 2 }]
                         */
                        var unionBy = baseRest(function (arrays) {
                            var iteratee = last(arrays);
                            if (isArrayLikeObject(iteratee)) {
                                iteratee = undefined;
                            }
                            return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
                        });

                        /**
                         * This method is like `_.union` except that it accepts `comparator` which
                         * is invoked to compare elements of `arrays`. Result values are chosen from
                         * the first array in which the value occurs. The comparator is invoked
                         * with two arguments: (arrVal, othVal).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to inspect.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns the new array of combined values.
                         * @example
                         *
                         * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
                         * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
                         *
                         * _.unionWith(objects, others, _.isEqual);
                         * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
                         */
                        var unionWith = baseRest(function (arrays) {
                            var comparator = last(arrays);
                            comparator = typeof comparator == 'function' ? comparator : undefined;
                            return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
                        });

                        /**
                         * Creates a duplicate-free version of an array, using
                         * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * for equality comparisons, in which only the first occurrence of each element
                         * is kept. The order of result values is determined by the order they occur
                         * in the array.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @returns {Array} Returns the new duplicate free array.
                         * @example
                         *
                         * _.uniq([2, 1, 2]);
                         * // => [2, 1]
                         */
                        function uniq(array) {
                            return (array && array.length) ? baseUniq(array) : [];
                        }

                        /**
                         * This method is like `_.uniq` except that it accepts `iteratee` which is
                         * invoked for each element in `array` to generate the criterion by which
                         * uniqueness is computed. The order of result values is determined by the
                         * order they occur in the array. The iteratee is invoked with one argument:
                         * (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {Array} Returns the new duplicate free array.
                         * @example
                         *
                         * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
                         * // => [2.1, 1.2]
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
                         * // => [{ 'x': 1 }, { 'x': 2 }]
                         */
                        function uniqBy(array, iteratee) {
                            return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];
                        }

                        /**
                         * This method is like `_.uniq` except that it accepts `comparator` which
                         * is invoked to compare elements of `array`. The order of result values is
                         * determined by the order they occur in the array.The comparator is invoked
                         * with two arguments: (arrVal, othVal).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns the new duplicate free array.
                         * @example
                         *
                         * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
                         *
                         * _.uniqWith(objects, _.isEqual);
                         * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
                         */
                        function uniqWith(array, comparator) {
                            comparator = typeof comparator == 'function' ? comparator : undefined;
                            return (array && array.length) ? baseUniq(array, undefined, comparator) : [];
                        }

                        /**
                         * This method is like `_.zip` except that it accepts an array of grouped
                         * elements and creates an array regrouping the elements to their pre-zip
                         * configuration.
                         *
                         * @static
                         * @memberOf _
                         * @since 1.2.0
                         * @category Array
                         * @param {Array} array The array of grouped elements to process.
                         * @returns {Array} Returns the new array of regrouped elements.
                         * @example
                         *
                         * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
                         * // => [['a', 1, true], ['b', 2, false]]
                         *
                         * _.unzip(zipped);
                         * // => [['a', 'b'], [1, 2], [true, false]]
                         */
                        function unzip(array) {
                            if (!(array && array.length)) {
                                return [];
                            }
                            var length = 0;
                            array = arrayFilter(array, function (group) {
                                if (isArrayLikeObject(group)) {
                                    length = nativeMax(group.length, length);
                                    return true;
                                }
                            });
                            return baseTimes(length, function (index) {
                                return arrayMap(array, baseProperty(index));
                            });
                        }

                        /**
                         * This method is like `_.unzip` except that it accepts `iteratee` to specify
                         * how regrouped values should be combined. The iteratee is invoked with the
                         * elements of each group: (...group).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.8.0
                         * @category Array
                         * @param {Array} array The array of grouped elements to process.
                         * @param {Function} [iteratee=_.identity] The function to combine
                         *  regrouped values.
                         * @returns {Array} Returns the new array of regrouped elements.
                         * @example
                         *
                         * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
                         * // => [[1, 10, 100], [2, 20, 200]]
                         *
                         * _.unzipWith(zipped, _.add);
                         * // => [3, 30, 300]
                         */
                        function unzipWith(array, iteratee) {
                            if (!(array && array.length)) {
                                return [];
                            }
                            var result = unzip(array);
                            if (iteratee == null) {
                                return result;
                            }
                            return arrayMap(result, function (group) {
                                return apply(iteratee, undefined, group);
                            });
                        }

                        /**
                         * Creates an array excluding all given values using
                         * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * for equality comparisons.
                         *
                         * **Note:** Unlike `_.pull`, this method returns a new array.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {Array} array The array to inspect.
                         * @param {...*} [values] The values to exclude.
                         * @returns {Array} Returns the new array of filtered values.
                         * @see _.difference, _.xor
                         * @example
                         *
                         * _.without([2, 1, 2, 3], 1, 2);
                         * // => [3]
                         */
                        var without = baseRest(function (array, values) {
                            return isArrayLikeObject(array)
                                ? baseDifference(array, values)
                                : [];
                        });

                        /**
                         * Creates an array of unique values that is the
                         * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
                         * of the given arrays. The order of result values is determined by the order
                         * they occur in the arrays.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.4.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to inspect.
                         * @returns {Array} Returns the new array of filtered values.
                         * @see _.difference, _.without
                         * @example
                         *
                         * _.xor([2, 1], [2, 3]);
                         * // => [1, 3]
                         */
                        var xor = baseRest(function (arrays) {
                            return baseXor(arrayFilter(arrays, isArrayLikeObject));
                        });

                        /**
                         * This method is like `_.xor` except that it accepts `iteratee` which is
                         * invoked for each element of each `arrays` to generate the criterion by
                         * which by which they're compared. The order of result values is determined
                         * by the order they occur in the arrays. The iteratee is invoked with one
                         * argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to inspect.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {Array} Returns the new array of filtered values.
                         * @example
                         *
                         * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
                         * // => [1.2, 3.4]
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
                         * // => [{ 'x': 2 }]
                         */
                        var xorBy = baseRest(function (arrays) {
                            var iteratee = last(arrays);
                            if (isArrayLikeObject(iteratee)) {
                                iteratee = undefined;
                            }
                            return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
                        });

                        /**
                         * This method is like `_.xor` except that it accepts `comparator` which is
                         * invoked to compare elements of `arrays`. The order of result values is
                         * determined by the order they occur in the arrays. The comparator is invoked
                         * with two arguments: (arrVal, othVal).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to inspect.
                         * @param {Function} [comparator] The comparator invoked per element.
                         * @returns {Array} Returns the new array of filtered values.
                         * @example
                         *
                         * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
                         * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
                         *
                         * _.xorWith(objects, others, _.isEqual);
                         * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
                         */
                        var xorWith = baseRest(function (arrays) {
                            var comparator = last(arrays);
                            comparator = typeof comparator == 'function' ? comparator : undefined;
                            return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);
                        });

                        /**
                         * Creates an array of grouped elements, the first of which contains the
                         * first elements of the given arrays, the second of which contains the
                         * second elements of the given arrays, and so on.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to process.
                         * @returns {Array} Returns the new array of grouped elements.
                         * @example
                         *
                         * _.zip(['a', 'b'], [1, 2], [true, false]);
                         * // => [['a', 1, true], ['b', 2, false]]
                         */
                        var zip = baseRest(unzip);

                        /**
                         * This method is like `_.fromPairs` except that it accepts two arrays,
                         * one of property identifiers and one of corresponding values.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.4.0
                         * @category Array
                         * @param {Array} [props=[]] The property identifiers.
                         * @param {Array} [values=[]] The property values.
                         * @returns {Object} Returns the new object.
                         * @example
                         *
                         * _.zipObject(['a', 'b'], [1, 2]);
                         * // => { 'a': 1, 'b': 2 }
                         */
                        function zipObject(props, values) {
                            return baseZipObject(props || [], values || [], assignValue);
                        }

                        /**
                         * This method is like `_.zipObject` except that it supports property paths.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.1.0
                         * @category Array
                         * @param {Array} [props=[]] The property identifiers.
                         * @param {Array} [values=[]] The property values.
                         * @returns {Object} Returns the new object.
                         * @example
                         *
                         * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
                         * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
                         */
                        function zipObjectDeep(props, values) {
                            return baseZipObject(props || [], values || [], baseSet);
                        }

                        /**
                         * This method is like `_.zip` except that it accepts `iteratee` to specify
                         * how grouped values should be combined. The iteratee is invoked with the
                         * elements of each group: (...group).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.8.0
                         * @category Array
                         * @param {...Array} [arrays] The arrays to process.
                         * @param {Function} [iteratee=_.identity] The function to combine
                         *  grouped values.
                         * @returns {Array} Returns the new array of grouped elements.
                         * @example
                         *
                         * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
                         *   return a + b + c;
                         * });
                         * // => [111, 222]
                         */
                        var zipWith = baseRest(function (arrays) {
                            var length = arrays.length,
                                iteratee = length > 1 ? arrays[length - 1] : undefined;

                            iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
                            return unzipWith(arrays, iteratee);
                        });

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates a `lodash` wrapper instance that wraps `value` with explicit method
                         * chain sequences enabled. The result of such sequences must be unwrapped
                         * with `_#value`.
                         *
                         * @static
                         * @memberOf _
                         * @since 1.3.0
                         * @category Seq
                         * @param {*} value The value to wrap.
                         * @returns {Object} Returns the new `lodash` wrapper instance.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney',  'age': 36 },
                         *   { 'user': 'fred',    'age': 40 },
                         *   { 'user': 'pebbles', 'age': 1 }
                         * ];
                         *
                         * var youngest = _
                         *   .chain(users)
                         *   .sortBy('age')
                         *   .map(function(o) {
                         *     return o.user + ' is ' + o.age;
                         *   })
                         *   .head()
                         *   .value();
                         * // => 'pebbles is 1'
                         */
                        function chain(value) {
                            var result = lodash(value);
                            result.__chain__ = true;
                            return result;
                        }

                        /**
                         * This method invokes `interceptor` and returns `value`. The interceptor
                         * is invoked with one argument; (value). The purpose of this method is to
                         * "tap into" a method chain sequence in order to modify intermediate results.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Seq
                         * @param {*} value The value to provide to `interceptor`.
                         * @param {Function} interceptor The function to invoke.
                         * @returns {*} Returns `value`.
                         * @example
                         *
                         * _([1, 2, 3])
                         *  .tap(function(array) {
                         *    // Mutate input array.
                         *    array.pop();
                         *  })
                         *  .reverse()
                         *  .value();
                         * // => [2, 1]
                         */
                        function tap(value, interceptor) {
                            interceptor(value);
                            return value;
                        }

                        /**
                         * This method is like `_.tap` except that it returns the result of `interceptor`.
                         * The purpose of this method is to "pass thru" values replacing intermediate
                         * results in a method chain sequence.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Seq
                         * @param {*} value The value to provide to `interceptor`.
                         * @param {Function} interceptor The function to invoke.
                         * @returns {*} Returns the result of `interceptor`.
                         * @example
                         *
                         * _('  abc  ')
                         *  .chain()
                         *  .trim()
                         *  .thru(function(value) {
                         *    return [value];
                         *  })
                         *  .value();
                         * // => ['abc']
                         */
                        function thru(value, interceptor) {
                            return interceptor(value);
                        }

                        /**
                         * This method is the wrapper version of `_.at`.
                         *
                         * @name at
                         * @memberOf _
                         * @since 1.0.0
                         * @category Seq
                         * @param {...(string|string[])} [paths] The property paths to pick.
                         * @returns {Object} Returns the new `lodash` wrapper instance.
                         * @example
                         *
                         * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
                         *
                         * _(object).at(['a[0].b.c', 'a[1]']).value();
                         * // => [3, 4]
                         */
                        var wrapperAt = flatRest(function (paths) {
                            var length = paths.length,
                                start = length ? paths[0] : 0,
                                value = this.__wrapped__,
                                interceptor = function (object) {
                                    return baseAt(object, paths);
                                };

                            if (length > 1 || this.__actions__.length ||
                                !(value instanceof LazyWrapper) || !isIndex(start)) {
                                return this.thru(interceptor);
                            }
                            value = value.slice(start, +start + (length ? 1 : 0));
                            value.__actions__.push({
                                'func': thru,
                                'args': [interceptor],
                                'thisArg': undefined
                            });
                            return new LodashWrapper(value, this.__chain__).thru(function (array) {
                                if (length && !array.length) {
                                    array.push(undefined);
                                }
                                return array;
                            });
                        });

                        /**
                         * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
                         *
                         * @name chain
                         * @memberOf _
                         * @since 0.1.0
                         * @category Seq
                         * @returns {Object} Returns the new `lodash` wrapper instance.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney', 'age': 36 },
                         *   { 'user': 'fred',   'age': 40 }
                         * ];
                         *
                         * // A sequence without explicit chaining.
                         * _(users).head();
                         * // => { 'user': 'barney', 'age': 36 }
                         *
                         * // A sequence with explicit chaining.
                         * _(users)
                         *   .chain()
                         *   .head()
                         *   .pick('user')
                         *   .value();
                         * // => { 'user': 'barney' }
                         */
                        function wrapperChain() {
                            return chain(this);
                        }

                        /**
                         * Executes the chain sequence and returns the wrapped result.
                         *
                         * @name commit
                         * @memberOf _
                         * @since 3.2.0
                         * @category Seq
                         * @returns {Object} Returns the new `lodash` wrapper instance.
                         * @example
                         *
                         * var array = [1, 2];
                         * var wrapped = _(array).push(3);
                         *
                         * console.log(array);
                         * // => [1, 2]
                         *
                         * wrapped = wrapped.commit();
                         * console.log(array);
                         * // => [1, 2, 3]
                         *
                         * wrapped.last();
                         * // => 3
                         *
                         * console.log(array);
                         * // => [1, 2, 3]
                         */
                        function wrapperCommit() {
                            return new LodashWrapper(this.value(), this.__chain__);
                        }

                        /**
                         * Gets the next value on a wrapped object following the
                         * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
                         *
                         * @name next
                         * @memberOf _
                         * @since 4.0.0
                         * @category Seq
                         * @returns {Object} Returns the next iterator value.
                         * @example
                         *
                         * var wrapped = _([1, 2]);
                         *
                         * wrapped.next();
                         * // => { 'done': false, 'value': 1 }
                         *
                         * wrapped.next();
                         * // => { 'done': false, 'value': 2 }
                         *
                         * wrapped.next();
                         * // => { 'done': true, 'value': undefined }
                         */
                        function wrapperNext() {
                            if (this.__values__ === undefined) {
                                this.__values__ = toArray(this.value());
                            }
                            var done = this.__index__ >= this.__values__.length,
                                value = done ? undefined : this.__values__[this.__index__++];

                            return {'done': done, 'value': value};
                        }

                        /**
                         * Enables the wrapper to be iterable.
                         *
                         * @name Symbol.iterator
                         * @memberOf _
                         * @since 4.0.0
                         * @category Seq
                         * @returns {Object} Returns the wrapper object.
                         * @example
                         *
                         * var wrapped = _([1, 2]);
                         *
                         * wrapped[Symbol.iterator]() === wrapped;
                         * // => true
                         *
                         * Array.from(wrapped);
                         * // => [1, 2]
                         */
                        function wrapperToIterator() {
                            return this;
                        }

                        /**
                         * Creates a clone of the chain sequence planting `value` as the wrapped value.
                         *
                         * @name plant
                         * @memberOf _
                         * @since 3.2.0
                         * @category Seq
                         * @param {*} value The value to plant.
                         * @returns {Object} Returns the new `lodash` wrapper instance.
                         * @example
                         *
                         * function square(n) {
                         *   return n * n;
                         * }
                         *
                         * var wrapped = _([1, 2]).map(square);
                         * var other = wrapped.plant([3, 4]);
                         *
                         * other.value();
                         * // => [9, 16]
                         *
                         * wrapped.value();
                         * // => [1, 4]
                         */
                        function wrapperPlant(value) {
                            var result,
                                parent = this;

                            while (parent instanceof baseLodash) {
                                var clone = wrapperClone(parent);
                                clone.__index__ = 0;
                                clone.__values__ = undefined;
                                if (result) {
                                    previous.__wrapped__ = clone;
                                } else {
                                    result = clone;
                                }
                                var previous = clone;
                                parent = parent.__wrapped__;
                            }
                            previous.__wrapped__ = value;
                            return result;
                        }

                        /**
                         * This method is the wrapper version of `_.reverse`.
                         *
                         * **Note:** This method mutates the wrapped array.
                         *
                         * @name reverse
                         * @memberOf _
                         * @since 0.1.0
                         * @category Seq
                         * @returns {Object} Returns the new `lodash` wrapper instance.
                         * @example
                         *
                         * var array = [1, 2, 3];
                         *
                         * _(array).reverse().value()
                         * // => [3, 2, 1]
                         *
                         * console.log(array);
                         * // => [3, 2, 1]
                         */
                        function wrapperReverse() {
                            var value = this.__wrapped__;
                            if (value instanceof LazyWrapper) {
                                var wrapped = value;
                                if (this.__actions__.length) {
                                    wrapped = new LazyWrapper(this);
                                }
                                wrapped = wrapped.reverse();
                                wrapped.__actions__.push({
                                    'func': thru,
                                    'args': [reverse],
                                    'thisArg': undefined
                                });
                                return new LodashWrapper(wrapped, this.__chain__);
                            }
                            return this.thru(reverse);
                        }

                        /**
                         * Executes the chain sequence to resolve the unwrapped value.
                         *
                         * @name value
                         * @memberOf _
                         * @since 0.1.0
                         * @alias toJSON, valueOf
                         * @category Seq
                         * @returns {*} Returns the resolved unwrapped value.
                         * @example
                         *
                         * _([1, 2, 3]).value();
                         * // => [1, 2, 3]
                         */
                        function wrapperValue() {
                            return baseWrapperValue(this.__wrapped__, this.__actions__);
                        }

                        /*------------------------------------------------------------------------*/

                        /**
                         * Creates an object composed of keys generated from the results of running
                         * each element of `collection` thru `iteratee`. The corresponding value of
                         * each key is the number of times the key was returned by `iteratee`. The
                         * iteratee is invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 0.5.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
                         * @returns {Object} Returns the composed aggregate object.
                         * @example
                         *
                         * _.countBy([6.1, 4.2, 6.3], Math.floor);
                         * // => { '4': 1, '6': 2 }
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.countBy(['one', 'two', 'three'], 'length');
                         * // => { '3': 2, '5': 1 }
                         */
                        var countBy = createAggregator(function (result, value, key) {
                            if (hasOwnProperty.call(result, key)) {
                                ++result[key];
                            } else {
                                baseAssignValue(result, key, 1);
                            }
                        });

                        /**
                         * Checks if `predicate` returns truthy for **all** elements of `collection`.
                         * Iteration is stopped once `predicate` returns falsey. The predicate is
                         * invoked with three arguments: (value, index|key, collection).
                         *
                         * **Note:** This method returns `true` for
                         * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
                         * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
                         * elements of empty collections.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {boolean} Returns `true` if all elements pass the predicate check,
                         *  else `false`.
                         * @example
                         *
                         * _.every([true, 1, null, 'yes'], Boolean);
                         * // => false
                         *
                         * var users = [
                         *   { 'user': 'barney', 'age': 36, 'active': false },
                         *   { 'user': 'fred',   'age': 40, 'active': false }
                         * ];
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.every(users, { 'user': 'barney', 'active': false });
                         * // => false
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.every(users, ['active', false]);
                         * // => true
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.every(users, 'active');
                         * // => false
                         */
                        function every(collection, predicate, guard) {
                            var func = isArray(collection) ? arrayEvery : baseEvery;
                            if (guard && isIterateeCall(collection, predicate, guard)) {
                                predicate = undefined;
                            }
                            return func(collection, getIteratee(predicate, 3));
                        }

                        /**
                         * Iterates over elements of `collection`, returning an array of all elements
                         * `predicate` returns truthy for. The predicate is invoked with three
                         * arguments: (value, index|key, collection).
                         *
                         * **Note:** Unlike `_.remove`, this method returns a new array.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the new filtered array.
                         * @see _.reject
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney', 'age': 36, 'active': true },
                         *   { 'user': 'fred',   'age': 40, 'active': false }
                         * ];
                         *
                         * _.filter(users, function(o) { return !o.active; });
                         * // => objects for ['fred']
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.filter(users, { 'age': 36, 'active': true });
                         * // => objects for ['barney']
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.filter(users, ['active', false]);
                         * // => objects for ['fred']
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.filter(users, 'active');
                         * // => objects for ['barney']
                         *
                         * // Combining several predicates using `_.overEvery` or `_.overSome`.
                         * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));
                         * // => objects for ['fred', 'barney']
                         */
                        function filter(collection, predicate) {
                            var func = isArray(collection) ? arrayFilter : baseFilter;
                            return func(collection, getIteratee(predicate, 3));
                        }

                        /**
                         * Iterates over elements of `collection`, returning the first element
                         * `predicate` returns truthy for. The predicate is invoked with three
                         * arguments: (value, index|key, collection).
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to inspect.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @param {number} [fromIndex=0] The index to search from.
                         * @returns {*} Returns the matched element, else `undefined`.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney',  'age': 36, 'active': true },
                         *   { 'user': 'fred',    'age': 40, 'active': false },
                         *   { 'user': 'pebbles', 'age': 1,  'active': true }
                         * ];
                         *
                         * _.find(users, function(o) { return o.age < 40; });
                         * // => object for 'barney'
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.find(users, { 'age': 1, 'active': true });
                         * // => object for 'pebbles'
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.find(users, ['active', false]);
                         * // => object for 'fred'
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.find(users, 'active');
                         * // => object for 'barney'
                         */
                        var find = createFind(findIndex);

                        /**
                         * This method is like `_.find` except that it iterates over elements of
                         * `collection` from right to left.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to inspect.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @param {number} [fromIndex=collection.length-1] The index to search from.
                         * @returns {*} Returns the matched element, else `undefined`.
                         * @example
                         *
                         * _.findLast([1, 2, 3, 4], function(n) {
                         *   return n % 2 == 1;
                         * });
                         * // => 3
                         */
                        var findLast = createFind(findLastIndex);

                        /**
                         * Creates a flattened array of values by running each element in `collection`
                         * thru `iteratee` and flattening the mapped results. The iteratee is invoked
                         * with three arguments: (value, index|key, collection).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the new flattened array.
                         * @example
                         *
                         * function duplicate(n) {
                         *   return [n, n];
                         * }
                         *
                         * _.flatMap([1, 2], duplicate);
                         * // => [1, 1, 2, 2]
                         */
                        function flatMap(collection, iteratee) {
                            return baseFlatten(map(collection, iteratee), 1);
                        }

                        /**
                         * This method is like `_.flatMap` except that it recursively flattens the
                         * mapped results.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.7.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the new flattened array.
                         * @example
                         *
                         * function duplicate(n) {
                         *   return [[[n, n]]];
                         * }
                         *
                         * _.flatMapDeep([1, 2], duplicate);
                         * // => [1, 1, 2, 2]
                         */
                        function flatMapDeep(collection, iteratee) {
                            return baseFlatten(map(collection, iteratee), INFINITY);
                        }

                        /**
                         * This method is like `_.flatMap` except that it recursively flattens the
                         * mapped results up to `depth` times.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.7.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @param {number} [depth=1] The maximum recursion depth.
                         * @returns {Array} Returns the new flattened array.
                         * @example
                         *
                         * function duplicate(n) {
                         *   return [[[n, n]]];
                         * }
                         *
                         * _.flatMapDepth([1, 2], duplicate, 2);
                         * // => [[1, 1], [2, 2]]
                         */
                        function flatMapDepth(collection, iteratee, depth) {
                            depth = depth === undefined ? 1 : toInteger(depth);
                            return baseFlatten(map(collection, iteratee), depth);
                        }

                        /**
                         * Iterates over elements of `collection` and invokes `iteratee` for each element.
                         * The iteratee is invoked with three arguments: (value, index|key, collection).
                         * Iteratee functions may exit iteration early by explicitly returning `false`.
                         *
                         * **Note:** As with other "Collections" methods, objects with a "length"
                         * property are iterated like arrays. To avoid this behavior use `_.forIn`
                         * or `_.forOwn` for object iteration.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @alias each
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Array|Object} Returns `collection`.
                         * @see _.forEachRight
                         * @example
                         *
                         * _.forEach([1, 2], function(value) {
                         *   console.log(value);
                         * });
                         * // => Logs `1` then `2`.
                         *
                         * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
                         *   console.log(key);
                         * });
                         * // => Logs 'a' then 'b' (iteration order is not guaranteed).
                         */
                        function forEach(collection, iteratee) {
                            var func = isArray(collection) ? arrayEach : baseEach;
                            return func(collection, getIteratee(iteratee, 3));
                        }

                        /**
                         * This method is like `_.forEach` except that it iterates over elements of
                         * `collection` from right to left.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @alias eachRight
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Array|Object} Returns `collection`.
                         * @see _.forEach
                         * @example
                         *
                         * _.forEachRight([1, 2], function(value) {
                         *   console.log(value);
                         * });
                         * // => Logs `2` then `1`.
                         */
                        function forEachRight(collection, iteratee) {
                            var func = isArray(collection) ? arrayEachRight : baseEachRight;
                            return func(collection, getIteratee(iteratee, 3));
                        }

                        /**
                         * Creates an object composed of keys generated from the results of running
                         * each element of `collection` thru `iteratee`. The order of grouped values
                         * is determined by the order they occur in `collection`. The corresponding
                         * value of each key is an array of elements responsible for generating the
                         * key. The iteratee is invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
                         * @returns {Object} Returns the composed aggregate object.
                         * @example
                         *
                         * _.groupBy([6.1, 4.2, 6.3], Math.floor);
                         * // => { '4': [4.2], '6': [6.1, 6.3] }
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.groupBy(['one', 'two', 'three'], 'length');
                         * // => { '3': ['one', 'two'], '5': ['three'] }
                         */
                        var groupBy = createAggregator(function (result, value, key) {
                            if (hasOwnProperty.call(result, key)) {
                                result[key].push(value);
                            } else {
                                baseAssignValue(result, key, [value]);
                            }
                        });

                        /**
                         * Checks if `value` is in `collection`. If `collection` is a string, it's
                         * checked for a substring of `value`, otherwise
                         * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * is used for equality comparisons. If `fromIndex` is negative, it's used as
                         * the offset from the end of `collection`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object|string} collection The collection to inspect.
                         * @param {*} value The value to search for.
                         * @param {number} [fromIndex=0] The index to search from.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
                         * @returns {boolean} Returns `true` if `value` is found, else `false`.
                         * @example
                         *
                         * _.includes([1, 2, 3], 1);
                         * // => true
                         *
                         * _.includes([1, 2, 3], 1, 2);
                         * // => false
                         *
                         * _.includes({ 'a': 1, 'b': 2 }, 1);
                         * // => true
                         *
                         * _.includes('abcd', 'bc');
                         * // => true
                         */
                        function includes(collection, value, fromIndex, guard) {
                            collection = isArrayLike(collection) ? collection : values(collection);
                            fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;

                            var length = collection.length;
                            if (fromIndex < 0) {
                                fromIndex = nativeMax(length + fromIndex, 0);
                            }
                            return isString(collection)
                                ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
                                : (!!length && baseIndexOf(collection, value, fromIndex) > -1);
                        }

                        /**
                         * Invokes the method at `path` of each element in `collection`, returning
                         * an array of the results of each invoked method. Any additional arguments
                         * are provided to each invoked method. If `path` is a function, it's invoked
                         * for, and `this` bound to, each element in `collection`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Array|Function|string} path The path of the method to invoke or
                         *  the function invoked per iteration.
                         * @param {...*} [args] The arguments to invoke each method with.
                         * @returns {Array} Returns the array of results.
                         * @example
                         *
                         * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
                         * // => [[1, 5, 7], [1, 2, 3]]
                         *
                         * _.invokeMap([123, 456], String.prototype.split, '');
                         * // => [['1', '2', '3'], ['4', '5', '6']]
                         */
                        var invokeMap = baseRest(function (collection, path, args) {
                            var index = -1,
                                isFunc = typeof path == 'function',
                                result = isArrayLike(collection) ? Array(collection.length) : [];

                            baseEach(collection, function (value) {
                                result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
                            });
                            return result;
                        });

                        /**
                         * Creates an object composed of keys generated from the results of running
                         * each element of `collection` thru `iteratee`. The corresponding value of
                         * each key is the last element responsible for generating the key. The
                         * iteratee is invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
                         * @returns {Object} Returns the composed aggregate object.
                         * @example
                         *
                         * var array = [
                         *   { 'dir': 'left', 'code': 97 },
                         *   { 'dir': 'right', 'code': 100 }
                         * ];
                         *
                         * _.keyBy(array, function(o) {
                         *   return String.fromCharCode(o.code);
                         * });
                         * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
                         *
                         * _.keyBy(array, 'dir');
                         * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
                         */
                        var keyBy = createAggregator(function (result, value, key) {
                            baseAssignValue(result, key, value);
                        });

                        /**
                         * Creates an array of values by running each element in `collection` thru
                         * `iteratee`. The iteratee is invoked with three arguments:
                         * (value, index|key, collection).
                         *
                         * Many lodash methods are guarded to work as iteratees for methods like
                         * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
                         *
                         * The guarded methods are:
                         * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
                         * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
                         * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
                         * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the new mapped array.
                         * @example
                         *
                         * function square(n) {
                         *   return n * n;
                         * }
                         *
                         * _.map([4, 8], square);
                         * // => [16, 64]
                         *
                         * _.map({ 'a': 4, 'b': 8 }, square);
                         * // => [16, 64] (iteration order is not guaranteed)
                         *
                         * var users = [
                         *   { 'user': 'barney' },
                         *   { 'user': 'fred' }
                         * ];
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.map(users, 'user');
                         * // => ['barney', 'fred']
                         */
                        function map(collection, iteratee) {
                            var func = isArray(collection) ? arrayMap : baseMap;
                            return func(collection, getIteratee(iteratee, 3));
                        }

                        /**
                         * This method is like `_.sortBy` except that it allows specifying the sort
                         * orders of the iteratees to sort by. If `orders` is unspecified, all values
                         * are sorted in ascending order. Otherwise, specify an order of "desc" for
                         * descending or "asc" for ascending sort order of corresponding values.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
                         *  The iteratees to sort by.
                         * @param {string[]} [orders] The sort orders of `iteratees`.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
                         * @returns {Array} Returns the new sorted array.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'fred',   'age': 48 },
                         *   { 'user': 'barney', 'age': 34 },
                         *   { 'user': 'fred',   'age': 40 },
                         *   { 'user': 'barney', 'age': 36 }
                         * ];
                         *
                         * // Sort by `user` in ascending order and by `age` in descending order.
                         * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
                         * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
                         */
                        function orderBy(collection, iteratees, orders, guard) {
                            if (collection == null) {
                                return [];
                            }
                            if (!isArray(iteratees)) {
                                iteratees = iteratees == null ? [] : [iteratees];
                            }
                            orders = guard ? undefined : orders;
                            if (!isArray(orders)) {
                                orders = orders == null ? [] : [orders];
                            }
                            return baseOrderBy(collection, iteratees, orders);
                        }

                        /**
                         * Creates an array of elements split into two groups, the first of which
                         * contains elements `predicate` returns truthy for, the second of which
                         * contains elements `predicate` returns falsey for. The predicate is
                         * invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the array of grouped elements.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney',  'age': 36, 'active': false },
                         *   { 'user': 'fred',    'age': 40, 'active': true },
                         *   { 'user': 'pebbles', 'age': 1,  'active': false }
                         * ];
                         *
                         * _.partition(users, function(o) { return o.active; });
                         * // => objects for [['fred'], ['barney', 'pebbles']]
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.partition(users, { 'age': 1, 'active': false });
                         * // => objects for [['pebbles'], ['barney', 'fred']]
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.partition(users, ['active', false]);
                         * // => objects for [['barney', 'pebbles'], ['fred']]
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.partition(users, 'active');
                         * // => objects for [['fred'], ['barney', 'pebbles']]
                         */
                        var partition = createAggregator(function (result, value, key) {
                            result[key ? 0 : 1].push(value);
                        }, function () {
                            return [[], []];
                        });

                        /**
                         * Reduces `collection` to a value which is the accumulated result of running
                         * each element in `collection` thru `iteratee`, where each successive
                         * invocation is supplied the return value of the previous. If `accumulator`
                         * is not given, the first element of `collection` is used as the initial
                         * value. The iteratee is invoked with four arguments:
                         * (accumulator, value, index|key, collection).
                         *
                         * Many lodash methods are guarded to work as iteratees for methods like
                         * `_.reduce`, `_.reduceRight`, and `_.transform`.
                         *
                         * The guarded methods are:
                         * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
                         * and `sortBy`
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @param {*} [accumulator] The initial value.
                         * @returns {*} Returns the accumulated value.
                         * @see _.reduceRight
                         * @example
                         *
                         * _.reduce([1, 2], function(sum, n) {
                         *   return sum + n;
                         * }, 0);
                         * // => 3
                         *
                         * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
                         *   (result[value] || (result[value] = [])).push(key);
                         *   return result;
                         * }, {});
                         * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
                         */
                        function reduce(collection, iteratee, accumulator) {
                            var func = isArray(collection) ? arrayReduce : baseReduce,
                                initAccum = arguments.length < 3;

                            return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
                        }

                        /**
                         * This method is like `_.reduce` except that it iterates over elements of
                         * `collection` from right to left.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @param {*} [accumulator] The initial value.
                         * @returns {*} Returns the accumulated value.
                         * @see _.reduce
                         * @example
                         *
                         * var array = [[0, 1], [2, 3], [4, 5]];
                         *
                         * _.reduceRight(array, function(flattened, other) {
                         *   return flattened.concat(other);
                         * }, []);
                         * // => [4, 5, 2, 3, 0, 1]
                         */
                        function reduceRight(collection, iteratee, accumulator) {
                            var func = isArray(collection) ? arrayReduceRight : baseReduce,
                                initAccum = arguments.length < 3;

                            return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
                        }

                        /**
                         * The opposite of `_.filter`; this method returns the elements of `collection`
                         * that `predicate` does **not** return truthy for.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the new filtered array.
                         * @see _.filter
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney', 'age': 36, 'active': false },
                         *   { 'user': 'fred',   'age': 40, 'active': true }
                         * ];
                         *
                         * _.reject(users, function(o) { return !o.active; });
                         * // => objects for ['fred']
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.reject(users, { 'age': 40, 'active': true });
                         * // => objects for ['barney']
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.reject(users, ['active', false]);
                         * // => objects for ['fred']
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.reject(users, 'active');
                         * // => objects for ['barney']
                         */
                        function reject(collection, predicate) {
                            var func = isArray(collection) ? arrayFilter : baseFilter;
                            return func(collection, negate(getIteratee(predicate, 3)));
                        }

                        /**
                         * Gets a random element from `collection`.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to sample.
                         * @returns {*} Returns the random element.
                         * @example
                         *
                         * _.sample([1, 2, 3, 4]);
                         * // => 2
                         */
                        function sample(collection) {
                            var func = isArray(collection) ? arraySample : baseSample;
                            return func(collection);
                        }

                        /**
                         * Gets `n` random elements at unique keys from `collection` up to the
                         * size of `collection`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to sample.
                         * @param {number} [n=1] The number of elements to sample.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Array} Returns the random elements.
                         * @example
                         *
                         * _.sampleSize([1, 2, 3], 2);
                         * // => [3, 1]
                         *
                         * _.sampleSize([1, 2, 3], 4);
                         * // => [2, 3, 1]
                         */
                        function sampleSize(collection, n, guard) {
                            if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
                                n = 1;
                            } else {
                                n = toInteger(n);
                            }
                            var func = isArray(collection) ? arraySampleSize : baseSampleSize;
                            return func(collection, n);
                        }

                        /**
                         * Creates an array of shuffled values, using a version of the
                         * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to shuffle.
                         * @returns {Array} Returns the new shuffled array.
                         * @example
                         *
                         * _.shuffle([1, 2, 3, 4]);
                         * // => [4, 1, 3, 2]
                         */
                        function shuffle(collection) {
                            var func = isArray(collection) ? arrayShuffle : baseShuffle;
                            return func(collection);
                        }

                        /**
                         * Gets the size of `collection` by returning its length for array-like
                         * values or the number of own enumerable string keyed properties for objects.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object|string} collection The collection to inspect.
                         * @returns {number} Returns the collection size.
                         * @example
                         *
                         * _.size([1, 2, 3]);
                         * // => 3
                         *
                         * _.size({ 'a': 1, 'b': 2 });
                         * // => 2
                         *
                         * _.size('pebbles');
                         * // => 7
                         */
                        function size(collection) {
                            if (collection == null) {
                                return 0;
                            }
                            if (isArrayLike(collection)) {
                                return isString(collection) ? stringSize(collection) : collection.length;
                            }
                            var tag = getTag(collection);
                            if (tag == mapTag || tag == setTag) {
                                return collection.size;
                            }
                            return baseKeys(collection).length;
                        }

                        /**
                         * Checks if `predicate` returns truthy for **any** element of `collection`.
                         * Iteration is stopped once `predicate` returns truthy. The predicate is
                         * invoked with three arguments: (value, index|key, collection).
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {boolean} Returns `true` if any element passes the predicate check,
                         *  else `false`.
                         * @example
                         *
                         * _.some([null, 0, 'yes', false], Boolean);
                         * // => true
                         *
                         * var users = [
                         *   { 'user': 'barney', 'active': true },
                         *   { 'user': 'fred',   'active': false }
                         * ];
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.some(users, { 'user': 'barney', 'active': false });
                         * // => false
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.some(users, ['active', false]);
                         * // => true
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.some(users, 'active');
                         * // => true
                         */
                        function some(collection, predicate, guard) {
                            var func = isArray(collection) ? arraySome : baseSome;
                            if (guard && isIterateeCall(collection, predicate, guard)) {
                                predicate = undefined;
                            }
                            return func(collection, getIteratee(predicate, 3));
                        }

                        /**
                         * Creates an array of elements, sorted in ascending order by the results of
                         * running each element in a collection thru each iteratee. This method
                         * performs a stable sort, that is, it preserves the original sort order of
                         * equal elements. The iteratees are invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Collection
                         * @param {Array|Object} collection The collection to iterate over.
                         * @param {...(Function|Function[])} [iteratees=[_.identity]]
                         *  The iteratees to sort by.
                         * @returns {Array} Returns the new sorted array.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'fred',   'age': 48 },
                         *   { 'user': 'barney', 'age': 36 },
                         *   { 'user': 'fred',   'age': 30 },
                         *   { 'user': 'barney', 'age': 34 }
                         * ];
                         *
                         * _.sortBy(users, [function(o) { return o.user; }]);
                         * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]
                         *
                         * _.sortBy(users, ['user', 'age']);
                         * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]
                         */
                        var sortBy = baseRest(function (collection, iteratees) {
                            if (collection == null) {
                                return [];
                            }
                            var length = iteratees.length;
                            if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
                                iteratees = [];
                            } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
                                iteratees = [iteratees[0]];
                            }
                            return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
                        });

                        /*------------------------------------------------------------------------*/

                        /**
                         * Gets the timestamp of the number of milliseconds that have elapsed since
                         * the Unix epoch (1 January 1970 00:00:00 UTC).
                         *
                         * @static
                         * @memberOf _
                         * @since 2.4.0
                         * @category Date
                         * @returns {number} Returns the timestamp.
                         * @example
                         *
                         * _.defer(function(stamp) {
                         *   console.log(_.now() - stamp);
                         * }, _.now());
                         * // => Logs the number of milliseconds it took for the deferred invocation.
                         */
                        var now = ctxNow || function () {
                            return root.Date.now();
                        };

                        /*------------------------------------------------------------------------*/

                        /**
                         * The opposite of `_.before`; this method creates a function that invokes
                         * `func` once it's called `n` or more times.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Function
                         * @param {number} n The number of calls before `func` is invoked.
                         * @param {Function} func The function to restrict.
                         * @returns {Function} Returns the new restricted function.
                         * @example
                         *
                         * var saves = ['profile', 'settings'];
                         *
                         * var done = _.after(saves.length, function() {
                         *   console.log('done saving!');
                         * });
                         *
                         * _.forEach(saves, function(type) {
                         *   asyncSave({ 'type': type, 'complete': done });
                         * });
                         * // => Logs 'done saving!' after the two async saves have completed.
                         */
                        function after(n, func) {
                            if (typeof func != 'function') {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            n = toInteger(n);
                            return function () {
                                if (--n < 1) {
                                    return func.apply(this, arguments);
                                }
                            };
                        }

                        /**
                         * Creates a function that invokes `func`, with up to `n` arguments,
                         * ignoring any additional arguments.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Function
                         * @param {Function} func The function to cap arguments for.
                         * @param {number} [n=func.length] The arity cap.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Function} Returns the new capped function.
                         * @example
                         *
                         * _.map(['6', '8', '10'], _.ary(parseInt, 1));
                         * // => [6, 8, 10]
                         */
                        function ary(func, n, guard) {
                            n = guard ? undefined : n;
                            n = (func && n == null) ? func.length : n;
                            return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
                        }

                        /**
                         * Creates a function that invokes `func`, with the `this` binding and arguments
                         * of the created function, while it's called less than `n` times. Subsequent
                         * calls to the created function return the result of the last `func` invocation.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Function
                         * @param {number} n The number of calls at which `func` is no longer invoked.
                         * @param {Function} func The function to restrict.
                         * @returns {Function} Returns the new restricted function.
                         * @example
                         *
                         * jQuery(element).on('click', _.before(5, addContactToList));
                         * // => Allows adding up to 4 contacts to the list.
                         */
                        function before(n, func) {
                            var result;
                            if (typeof func != 'function') {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            n = toInteger(n);
                            return function () {
                                if (--n > 0) {
                                    result = func.apply(this, arguments);
                                }
                                if (n <= 1) {
                                    func = undefined;
                                }
                                return result;
                            };
                        }

                        /**
                         * Creates a function that invokes `func` with the `this` binding of `thisArg`
                         * and `partials` prepended to the arguments it receives.
                         *
                         * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
                         * may be used as a placeholder for partially applied arguments.
                         *
                         * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
                         * property of bound functions.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Function
                         * @param {Function} func The function to bind.
                         * @param {*} thisArg The `this` binding of `func`.
                         * @param {...*} [partials] The arguments to be partially applied.
                         * @returns {Function} Returns the new bound function.
                         * @example
                         *
                         * function greet(greeting, punctuation) {
                         *   return greeting + ' ' + this.user + punctuation;
                         * }
                         *
                         * var object = { 'user': 'fred' };
                         *
                         * var bound = _.bind(greet, object, 'hi');
                         * bound('!');
                         * // => 'hi fred!'
                         *
                         * // Bound with placeholders.
                         * var bound = _.bind(greet, object, _, '!');
                         * bound('hi');
                         * // => 'hi fred!'
                         */
                        var bind = baseRest(function (func, thisArg, partials) {
                            var bitmask = WRAP_BIND_FLAG;
                            if (partials.length) {
                                var holders = replaceHolders(partials, getHolder(bind));
                                bitmask |= WRAP_PARTIAL_FLAG;
                            }
                            return createWrap(func, bitmask, thisArg, partials, holders);
                        });

                        /**
                         * Creates a function that invokes the method at `object[key]` with `partials`
                         * prepended to the arguments it receives.
                         *
                         * This method differs from `_.bind` by allowing bound functions to reference
                         * methods that may be redefined or don't yet exist. See
                         * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
                         * for more details.
                         *
                         * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
                         * builds, may be used as a placeholder for partially applied arguments.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.10.0
                         * @category Function
                         * @param {Object} object The object to invoke the method on.
                         * @param {string} key The key of the method.
                         * @param {...*} [partials] The arguments to be partially applied.
                         * @returns {Function} Returns the new bound function.
                         * @example
                         *
                         * var object = {
                         *   'user': 'fred',
                         *   'greet': function(greeting, punctuation) {
                         *     return greeting + ' ' + this.user + punctuation;
                         *   }
                         * };
                         *
                         * var bound = _.bindKey(object, 'greet', 'hi');
                         * bound('!');
                         * // => 'hi fred!'
                         *
                         * object.greet = function(greeting, punctuation) {
                         *   return greeting + 'ya ' + this.user + punctuation;
                         * };
                         *
                         * bound('!');
                         * // => 'hiya fred!'
                         *
                         * // Bound with placeholders.
                         * var bound = _.bindKey(object, 'greet', _, '!');
                         * bound('hi');
                         * // => 'hiya fred!'
                         */
                        var bindKey = baseRest(function (object, key, partials) {
                            var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
                            if (partials.length) {
                                var holders = replaceHolders(partials, getHolder(bindKey));
                                bitmask |= WRAP_PARTIAL_FLAG;
                            }
                            return createWrap(key, bitmask, object, partials, holders);
                        });

                        /**
                         * Creates a function that accepts arguments of `func` and either invokes
                         * `func` returning its result, if at least `arity` number of arguments have
                         * been provided, or returns a function that accepts the remaining `func`
                         * arguments, and so on. The arity of `func` may be specified if `func.length`
                         * is not sufficient.
                         *
                         * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
                         * may be used as a placeholder for provided arguments.
                         *
                         * **Note:** This method doesn't set the "length" property of curried functions.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @category Function
                         * @param {Function} func The function to curry.
                         * @param {number} [arity=func.length] The arity of `func`.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Function} Returns the new curried function.
                         * @example
                         *
                         * var abc = function(a, b, c) {
                         *   return [a, b, c];
                         * };
                         *
                         * var curried = _.curry(abc);
                         *
                         * curried(1)(2)(3);
                         * // => [1, 2, 3]
                         *
                         * curried(1, 2)(3);
                         * // => [1, 2, 3]
                         *
                         * curried(1, 2, 3);
                         * // => [1, 2, 3]
                         *
                         * // Curried with placeholders.
                         * curried(1)(_, 3)(2);
                         * // => [1, 2, 3]
                         */
                        function curry(func, arity, guard) {
                            arity = guard ? undefined : arity;
                            var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
                            result.placeholder = curry.placeholder;
                            return result;
                        }

                        /**
                         * This method is like `_.curry` except that arguments are applied to `func`
                         * in the manner of `_.partialRight` instead of `_.partial`.
                         *
                         * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
                         * builds, may be used as a placeholder for provided arguments.
                         *
                         * **Note:** This method doesn't set the "length" property of curried functions.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Function
                         * @param {Function} func The function to curry.
                         * @param {number} [arity=func.length] The arity of `func`.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Function} Returns the new curried function.
                         * @example
                         *
                         * var abc = function(a, b, c) {
                         *   return [a, b, c];
                         * };
                         *
                         * var curried = _.curryRight(abc);
                         *
                         * curried(3)(2)(1);
                         * // => [1, 2, 3]
                         *
                         * curried(2, 3)(1);
                         * // => [1, 2, 3]
                         *
                         * curried(1, 2, 3);
                         * // => [1, 2, 3]
                         *
                         * // Curried with placeholders.
                         * curried(3)(1, _)(2);
                         * // => [1, 2, 3]
                         */
                        function curryRight(func, arity, guard) {
                            arity = guard ? undefined : arity;
                            var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
                            result.placeholder = curryRight.placeholder;
                            return result;
                        }

                        /**
                         * Creates a debounced function that delays invoking `func` until after `wait`
                         * milliseconds have elapsed since the last time the debounced function was
                         * invoked. The debounced function comes with a `cancel` method to cancel
                         * delayed `func` invocations and a `flush` method to immediately invoke them.
                         * Provide `options` to indicate whether `func` should be invoked on the
                         * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
                         * with the last arguments provided to the debounced function. Subsequent
                         * calls to the debounced function return the result of the last `func`
                         * invocation.
                         *
                         * **Note:** If `leading` and `trailing` options are `true`, `func` is
                         * invoked on the trailing edge of the timeout only if the debounced function
                         * is invoked more than once during the `wait` timeout.
                         *
                         * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
                         * until to the next tick, similar to `setTimeout` with a timeout of `0`.
                         *
                         * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
                         * for details over the differences between `_.debounce` and `_.throttle`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Function
                         * @param {Function} func The function to debounce.
                         * @param {number} [wait=0] The number of milliseconds to delay.
                         * @param {Object} [options={}] The options object.
                         * @param {boolean} [options.leading=false]
                         *  Specify invoking on the leading edge of the timeout.
                         * @param {number} [options.maxWait]
                         *  The maximum time `func` is allowed to be delayed before it's invoked.
                         * @param {boolean} [options.trailing=true]
                         *  Specify invoking on the trailing edge of the timeout.
                         * @returns {Function} Returns the new debounced function.
                         * @example
                         *
                         * // Avoid costly calculations while the window size is in flux.
                         * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
                         *
                         * // Invoke `sendMail` when clicked, debouncing subsequent calls.
                         * jQuery(element).on('click', _.debounce(sendMail, 300, {
                         *   'leading': true,
                         *   'trailing': false
                         * }));
                         *
                         * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
                         * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
                         * var source = new EventSource('/stream');
                         * jQuery(source).on('message', debounced);
                         *
                         * // Cancel the trailing debounced invocation.
                         * jQuery(window).on('popstate', debounced.cancel);
                         */
                        function debounce(func, wait, options) {
                            var lastArgs,
                                lastThis,
                                maxWait,
                                result,
                                timerId,
                                lastCallTime,
                                lastInvokeTime = 0,
                                leading = false,
                                maxing = false,
                                trailing = true;

                            if (typeof func != 'function') {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            wait = toNumber(wait) || 0;
                            if (isObject(options)) {
                                leading = !!options.leading;
                                maxing = 'maxWait' in options;
                                maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
                                trailing = 'trailing' in options ? !!options.trailing : trailing;
                            }

                            function invokeFunc(time) {
                                var args = lastArgs,
                                    thisArg = lastThis;

                                lastArgs = lastThis = undefined;
                                lastInvokeTime = time;
                                result = func.apply(thisArg, args);
                                return result;
                            }

                            function leadingEdge(time) {
                                // Reset any `maxWait` timer.
                                lastInvokeTime = time;
                                // Start the timer for the trailing edge.
                                timerId = setTimeout(timerExpired, wait);
                                // Invoke the leading edge.
                                return leading ? invokeFunc(time) : result;
                            }

                            function remainingWait(time) {
                                var timeSinceLastCall = time - lastCallTime,
                                    timeSinceLastInvoke = time - lastInvokeTime,
                                    timeWaiting = wait - timeSinceLastCall;

                                return maxing
                                    ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
                                    : timeWaiting;
                            }

                            function shouldInvoke(time) {
                                var timeSinceLastCall = time - lastCallTime,
                                    timeSinceLastInvoke = time - lastInvokeTime;

                                // Either this is the first call, activity has stopped and we're at the
                                // trailing edge, the system time has gone backwards and we're treating
                                // it as the trailing edge, or we've hit the `maxWait` limit.
                                return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
                                    (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
                            }

                            function timerExpired() {
                                var time = now();
                                if (shouldInvoke(time)) {
                                    return trailingEdge(time);
                                }
                                // Restart the timer.
                                timerId = setTimeout(timerExpired, remainingWait(time));
                            }

                            function trailingEdge(time) {
                                timerId = undefined;

                                // Only invoke if we have `lastArgs` which means `func` has been
                                // debounced at least once.
                                if (trailing && lastArgs) {
                                    return invokeFunc(time);
                                }
                                lastArgs = lastThis = undefined;
                                return result;
                            }

                            function cancel() {
                                if (timerId !== undefined) {
                                    clearTimeout(timerId);
                                }
                                lastInvokeTime = 0;
                                lastArgs = lastCallTime = lastThis = timerId = undefined;
                            }

                            function flush() {
                                return timerId === undefined ? result : trailingEdge(now());
                            }

                            function debounced() {
                                var time = now(),
                                    isInvoking = shouldInvoke(time);

                                lastArgs = arguments;
                                lastThis = this;
                                lastCallTime = time;

                                if (isInvoking) {
                                    if (timerId === undefined) {
                                        return leadingEdge(lastCallTime);
                                    }
                                    if (maxing) {
                                        // Handle invocations in a tight loop.
                                        clearTimeout(timerId);
                                        timerId = setTimeout(timerExpired, wait);
                                        return invokeFunc(lastCallTime);
                                    }
                                }
                                if (timerId === undefined) {
                                    timerId = setTimeout(timerExpired, wait);
                                }
                                return result;
                            }

                            debounced.cancel = cancel;
                            debounced.flush = flush;
                            return debounced;
                        }

                        /**
                         * Defers invoking the `func` until the current call stack has cleared. Any
                         * additional arguments are provided to `func` when it's invoked.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Function
                         * @param {Function} func The function to defer.
                         * @param {...*} [args] The arguments to invoke `func` with.
                         * @returns {number} Returns the timer id.
                         * @example
                         *
                         * _.defer(function(text) {
                         *   console.log(text);
                         * }, 'deferred');
                         * // => Logs 'deferred' after one millisecond.
                         */
                        var defer = baseRest(function (func, args) {
                            return baseDelay(func, 1, args);
                        });

                        /**
                         * Invokes `func` after `wait` milliseconds. Any additional arguments are
                         * provided to `func` when it's invoked.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Function
                         * @param {Function} func The function to delay.
                         * @param {number} wait The number of milliseconds to delay invocation.
                         * @param {...*} [args] The arguments to invoke `func` with.
                         * @returns {number} Returns the timer id.
                         * @example
                         *
                         * _.delay(function(text) {
                         *   console.log(text);
                         * }, 1000, 'later');
                         * // => Logs 'later' after one second.
                         */
                        var delay = baseRest(function (func, wait, args) {
                            return baseDelay(func, toNumber(wait) || 0, args);
                        });

                        /**
                         * Creates a function that invokes `func` with arguments reversed.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Function
                         * @param {Function} func The function to flip arguments for.
                         * @returns {Function} Returns the new flipped function.
                         * @example
                         *
                         * var flipped = _.flip(function() {
                         *   return _.toArray(arguments);
                         * });
                         *
                         * flipped('a', 'b', 'c', 'd');
                         * // => ['d', 'c', 'b', 'a']
                         */
                        function flip(func) {
                            return createWrap(func, WRAP_FLIP_FLAG);
                        }

                        /**
                         * Creates a function that memoizes the result of `func`. If `resolver` is
                         * provided, it determines the cache key for storing the result based on the
                         * arguments provided to the memoized function. By default, the first argument
                         * provided to the memoized function is used as the map cache key. The `func`
                         * is invoked with the `this` binding of the memoized function.
                         *
                         * **Note:** The cache is exposed as the `cache` property on the memoized
                         * function. Its creation may be customized by replacing the `_.memoize.Cache`
                         * constructor with one whose instances implement the
                         * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
                         * method interface of `clear`, `delete`, `get`, `has`, and `set`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Function
                         * @param {Function} func The function to have its output memoized.
                         * @param {Function} [resolver] The function to resolve the cache key.
                         * @returns {Function} Returns the new memoized function.
                         * @example
                         *
                         * var object = { 'a': 1, 'b': 2 };
                         * var other = { 'c': 3, 'd': 4 };
                         *
                         * var values = _.memoize(_.values);
                         * values(object);
                         * // => [1, 2]
                         *
                         * values(other);
                         * // => [3, 4]
                         *
                         * object.a = 2;
                         * values(object);
                         * // => [1, 2]
                         *
                         * // Modify the result cache.
                         * values.cache.set(object, ['a', 'b']);
                         * values(object);
                         * // => ['a', 'b']
                         *
                         * // Replace `_.memoize.Cache`.
                         * _.memoize.Cache = WeakMap;
                         */
                        function memoize(func, resolver) {
                            if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            var memoized = function () {
                                var args = arguments,
                                    key = resolver ? resolver.apply(this, args) : args[0],
                                    cache = memoized.cache;

                                if (cache.has(key)) {
                                    return cache.get(key);
                                }
                                var result = func.apply(this, args);
                                memoized.cache = cache.set(key, result) || cache;
                                return result;
                            };
                            memoized.cache = new (memoize.Cache || MapCache);
                            return memoized;
                        }

                        // Expose `MapCache`.
                        memoize.Cache = MapCache;

                        /**
                         * Creates a function that negates the result of the predicate `func`. The
                         * `func` predicate is invoked with the `this` binding and arguments of the
                         * created function.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Function
                         * @param {Function} predicate The predicate to negate.
                         * @returns {Function} Returns the new negated function.
                         * @example
                         *
                         * function isEven(n) {
                         *   return n % 2 == 0;
                         * }
                         *
                         * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
                         * // => [1, 3, 5]
                         */
                        function negate(predicate) {
                            if (typeof predicate != 'function') {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            return function () {
                                var args = arguments;
                                switch (args.length) {
                                    case 0:
                                        return !predicate.call(this);
                                    case 1:
                                        return !predicate.call(this, args[0]);
                                    case 2:
                                        return !predicate.call(this, args[0], args[1]);
                                    case 3:
                                        return !predicate.call(this, args[0], args[1], args[2]);
                                }
                                return !predicate.apply(this, args);
                            };
                        }

                        /**
                         * Creates a function that is restricted to invoking `func` once. Repeat calls
                         * to the function return the value of the first invocation. The `func` is
                         * invoked with the `this` binding and arguments of the created function.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Function
                         * @param {Function} func The function to restrict.
                         * @returns {Function} Returns the new restricted function.
                         * @example
                         *
                         * var initialize = _.once(createApplication);
                         * initialize();
                         * initialize();
                         * // => `createApplication` is invoked once
                         */
                        function once(func) {
                            return before(2, func);
                        }

                        /**
                         * Creates a function that invokes `func` with its arguments transformed.
                         *
                         * @static
                         * @since 4.0.0
                         * @memberOf _
                         * @category Function
                         * @param {Function} func The function to wrap.
                         * @param {...(Function|Function[])} [transforms=[_.identity]]
                         *  The argument transforms.
                         * @returns {Function} Returns the new function.
                         * @example
                         *
                         * function doubled(n) {
                         *   return n * 2;
                         * }
                         *
                         * function square(n) {
                         *   return n * n;
                         * }
                         *
                         * var func = _.overArgs(function(x, y) {
                         *   return [x, y];
                         * }, [square, doubled]);
                         *
                         * func(9, 3);
                         * // => [81, 6]
                         *
                         * func(10, 5);
                         * // => [100, 10]
                         */
                        var overArgs = castRest(function (func, transforms) {
                            transforms = (transforms.length == 1 && isArray(transforms[0]))
                                ? arrayMap(transforms[0], baseUnary(getIteratee()))
                                : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));

                            var funcsLength = transforms.length;
                            return baseRest(function (args) {
                                var index = -1,
                                    length = nativeMin(args.length, funcsLength);

                                while (++index < length) {
                                    args[index] = transforms[index].call(this, args[index]);
                                }
                                return apply(func, this, args);
                            });
                        });

                        /**
                         * Creates a function that invokes `func` with `partials` prepended to the
                         * arguments it receives. This method is like `_.bind` except it does **not**
                         * alter the `this` binding.
                         *
                         * The `_.partial.placeholder` value, which defaults to `_` in monolithic
                         * builds, may be used as a placeholder for partially applied arguments.
                         *
                         * **Note:** This method doesn't set the "length" property of partially
                         * applied functions.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.2.0
                         * @category Function
                         * @param {Function} func The function to partially apply arguments to.
                         * @param {...*} [partials] The arguments to be partially applied.
                         * @returns {Function} Returns the new partially applied function.
                         * @example
                         *
                         * function greet(greeting, name) {
                         *   return greeting + ' ' + name;
                         * }
                         *
                         * var sayHelloTo = _.partial(greet, 'hello');
                         * sayHelloTo('fred');
                         * // => 'hello fred'
                         *
                         * // Partially applied with placeholders.
                         * var greetFred = _.partial(greet, _, 'fred');
                         * greetFred('hi');
                         * // => 'hi fred'
                         */
                        var partial = baseRest(function (func, partials) {
                            var holders = replaceHolders(partials, getHolder(partial));
                            return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
                        });

                        /**
                         * This method is like `_.partial` except that partially applied arguments
                         * are appended to the arguments it receives.
                         *
                         * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
                         * builds, may be used as a placeholder for partially applied arguments.
                         *
                         * **Note:** This method doesn't set the "length" property of partially
                         * applied functions.
                         *
                         * @static
                         * @memberOf _
                         * @since 1.0.0
                         * @category Function
                         * @param {Function} func The function to partially apply arguments to.
                         * @param {...*} [partials] The arguments to be partially applied.
                         * @returns {Function} Returns the new partially applied function.
                         * @example
                         *
                         * function greet(greeting, name) {
                         *   return greeting + ' ' + name;
                         * }
                         *
                         * var greetFred = _.partialRight(greet, 'fred');
                         * greetFred('hi');
                         * // => 'hi fred'
                         *
                         * // Partially applied with placeholders.
                         * var sayHelloTo = _.partialRight(greet, 'hello', _);
                         * sayHelloTo('fred');
                         * // => 'hello fred'
                         */
                        var partialRight = baseRest(function (func, partials) {
                            var holders = replaceHolders(partials, getHolder(partialRight));
                            return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);
                        });

                        /**
                         * Creates a function that invokes `func` with arguments arranged according
                         * to the specified `indexes` where the argument value at the first index is
                         * provided as the first argument, the argument value at the second index is
                         * provided as the second argument, and so on.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Function
                         * @param {Function} func The function to rearrange arguments for.
                         * @param {...(number|number[])} indexes The arranged argument indexes.
                         * @returns {Function} Returns the new function.
                         * @example
                         *
                         * var rearged = _.rearg(function(a, b, c) {
                         *   return [a, b, c];
                         * }, [2, 0, 1]);
                         *
                         * rearged('b', 'c', 'a')
                         * // => ['a', 'b', 'c']
                         */
                        var rearg = flatRest(function (func, indexes) {
                            return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);
                        });

                        /**
                         * Creates a function that invokes `func` with the `this` binding of the
                         * created function and arguments from `start` and beyond provided as
                         * an array.
                         *
                         * **Note:** This method is based on the
                         * [rest parameter](https://mdn.io/rest_parameters).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Function
                         * @param {Function} func The function to apply a rest parameter to.
                         * @param {number} [start=func.length-1] The start position of the rest parameter.
                         * @returns {Function} Returns the new function.
                         * @example
                         *
                         * var say = _.rest(function(what, names) {
                         *   return what + ' ' + _.initial(names).join(', ') +
                         *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
                         * });
                         *
                         * say('hello', 'fred', 'barney', 'pebbles');
                         * // => 'hello fred, barney, & pebbles'
                         */
                        function rest(func, start) {
                            if (typeof func != 'function') {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            start = start === undefined ? start : toInteger(start);
                            return baseRest(func, start);
                        }

                        /**
                         * Creates a function that invokes `func` with the `this` binding of the
                         * create function and an array of arguments much like
                         * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
                         *
                         * **Note:** This method is based on the
                         * [spread operator](https://mdn.io/spread_operator).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.2.0
                         * @category Function
                         * @param {Function} func The function to spread arguments over.
                         * @param {number} [start=0] The start position of the spread.
                         * @returns {Function} Returns the new function.
                         * @example
                         *
                         * var say = _.spread(function(who, what) {
                         *   return who + ' says ' + what;
                         * });
                         *
                         * say(['fred', 'hello']);
                         * // => 'fred says hello'
                         *
                         * var numbers = Promise.all([
                         *   Promise.resolve(40),
                         *   Promise.resolve(36)
                         * ]);
                         *
                         * numbers.then(_.spread(function(x, y) {
                         *   return x + y;
                         * }));
                         * // => a Promise of 76
                         */
                        function spread(func, start) {
                            if (typeof func != 'function') {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            start = start == null ? 0 : nativeMax(toInteger(start), 0);
                            return baseRest(function (args) {
                                var array = args[start],
                                    otherArgs = castSlice(args, 0, start);

                                if (array) {
                                    arrayPush(otherArgs, array);
                                }
                                return apply(func, this, otherArgs);
                            });
                        }

                        /**
                         * Creates a throttled function that only invokes `func` at most once per
                         * every `wait` milliseconds. The throttled function comes with a `cancel`
                         * method to cancel delayed `func` invocations and a `flush` method to
                         * immediately invoke them. Provide `options` to indicate whether `func`
                         * should be invoked on the leading and/or trailing edge of the `wait`
                         * timeout. The `func` is invoked with the last arguments provided to the
                         * throttled function. Subsequent calls to the throttled function return the
                         * result of the last `func` invocation.
                         *
                         * **Note:** If `leading` and `trailing` options are `true`, `func` is
                         * invoked on the trailing edge of the timeout only if the throttled function
                         * is invoked more than once during the `wait` timeout.
                         *
                         * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
                         * until to the next tick, similar to `setTimeout` with a timeout of `0`.
                         *
                         * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
                         * for details over the differences between `_.throttle` and `_.debounce`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Function
                         * @param {Function} func The function to throttle.
                         * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
                         * @param {Object} [options={}] The options object.
                         * @param {boolean} [options.leading=true]
                         *  Specify invoking on the leading edge of the timeout.
                         * @param {boolean} [options.trailing=true]
                         *  Specify invoking on the trailing edge of the timeout.
                         * @returns {Function} Returns the new throttled function.
                         * @example
                         *
                         * // Avoid excessively updating the position while scrolling.
                         * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
                         *
                         * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
                         * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
                         * jQuery(element).on('click', throttled);
                         *
                         * // Cancel the trailing throttled invocation.
                         * jQuery(window).on('popstate', throttled.cancel);
                         */
                        function throttle(func, wait, options) {
                            var leading = true,
                                trailing = true;

                            if (typeof func != 'function') {
                                throw new TypeError(FUNC_ERROR_TEXT);
                            }
                            if (isObject(options)) {
                                leading = 'leading' in options ? !!options.leading : leading;
                                trailing = 'trailing' in options ? !!options.trailing : trailing;
                            }
                            return debounce(func, wait, {
                                'leading': leading,
                                'maxWait': wait,
                                'trailing': trailing
                            });
                        }

                        /**
                         * Creates a function that accepts up to one argument, ignoring any
                         * additional arguments.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Function
                         * @param {Function} func The function to cap arguments for.
                         * @returns {Function} Returns the new capped function.
                         * @example
                         *
                         * _.map(['6', '8', '10'], _.unary(parseInt));
                         * // => [6, 8, 10]
                         */
                        function unary(func) {
                            return ary(func, 1);
                        }

                        /**
                         * Creates a function that provides `value` to `wrapper` as its first
                         * argument. Any additional arguments provided to the function are appended
                         * to those provided to the `wrapper`. The wrapper is invoked with the `this`
                         * binding of the created function.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Function
                         * @param {*} value The value to wrap.
                         * @param {Function} [wrapper=identity] The wrapper function.
                         * @returns {Function} Returns the new function.
                         * @example
                         *
                         * var p = _.wrap(_.escape, function(func, text) {
                         *   return '<p>' + func(text) + '</p>';
                         * });
                         *
                         * p('fred, barney, & pebbles');
                         * // => '<p>fred, barney, &amp; pebbles</p>'
                         */
                        function wrap(value, wrapper) {
                            return partial(castFunction(wrapper), value);
                        }

                        /*------------------------------------------------------------------------*/

                        /**
                         * Casts `value` as an array if it's not one.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.4.0
                         * @category Lang
                         * @param {*} value The value to inspect.
                         * @returns {Array} Returns the cast array.
                         * @example
                         *
                         * _.castArray(1);
                         * // => [1]
                         *
                         * _.castArray({ 'a': 1 });
                         * // => [{ 'a': 1 }]
                         *
                         * _.castArray('abc');
                         * // => ['abc']
                         *
                         * _.castArray(null);
                         * // => [null]
                         *
                         * _.castArray(undefined);
                         * // => [undefined]
                         *
                         * _.castArray();
                         * // => []
                         *
                         * var array = [1, 2, 3];
                         * console.log(_.castArray(array) === array);
                         * // => true
                         */
                        function castArray() {
                            if (!arguments.length) {
                                return [];
                            }
                            var value = arguments[0];
                            return isArray(value) ? value : [value];
                        }

                        /**
                         * Creates a shallow clone of `value`.
                         *
                         * **Note:** This method is loosely based on the
                         * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
                         * and supports cloning arrays, array buffers, booleans, date objects, maps,
                         * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
                         * arrays. The own enumerable properties of `arguments` objects are cloned
                         * as plain objects. An empty object is returned for uncloneable values such
                         * as error objects, functions, DOM nodes, and WeakMaps.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to clone.
                         * @returns {*} Returns the cloned value.
                         * @see _.cloneDeep
                         * @example
                         *
                         * var objects = [{ 'a': 1 }, { 'b': 2 }];
                         *
                         * var shallow = _.clone(objects);
                         * console.log(shallow[0] === objects[0]);
                         * // => true
                         */
                        function clone(value) {
                            return baseClone(value, CLONE_SYMBOLS_FLAG);
                        }

                        /**
                         * This method is like `_.clone` except that it accepts `customizer` which
                         * is invoked to produce the cloned value. If `customizer` returns `undefined`,
                         * cloning is handled by the method instead. The `customizer` is invoked with
                         * up to four arguments; (value [, index|key, object, stack]).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to clone.
                         * @param {Function} [customizer] The function to customize cloning.
                         * @returns {*} Returns the cloned value.
                         * @see _.cloneDeepWith
                         * @example
                         *
                         * function customizer(value) {
                         *   if (_.isElement(value)) {
                         *     return value.cloneNode(false);
                         *   }
                         * }
                         *
                         * var el = _.cloneWith(document.body, customizer);
                         *
                         * console.log(el === document.body);
                         * // => false
                         * console.log(el.nodeName);
                         * // => 'BODY'
                         * console.log(el.childNodes.length);
                         * // => 0
                         */
                        function cloneWith(value, customizer) {
                            customizer = typeof customizer == 'function' ? customizer : undefined;
                            return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
                        }

                        /**
                         * This method is like `_.clone` except that it recursively clones `value`.
                         *
                         * @static
                         * @memberOf _
                         * @since 1.0.0
                         * @category Lang
                         * @param {*} value The value to recursively clone.
                         * @returns {*} Returns the deep cloned value.
                         * @see _.clone
                         * @example
                         *
                         * var objects = [{ 'a': 1 }, { 'b': 2 }];
                         *
                         * var deep = _.cloneDeep(objects);
                         * console.log(deep[0] === objects[0]);
                         * // => false
                         */
                        function cloneDeep(value) {
                            return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
                        }

                        /**
                         * This method is like `_.cloneWith` except that it recursively clones `value`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to recursively clone.
                         * @param {Function} [customizer] The function to customize cloning.
                         * @returns {*} Returns the deep cloned value.
                         * @see _.cloneWith
                         * @example
                         *
                         * function customizer(value) {
                         *   if (_.isElement(value)) {
                         *     return value.cloneNode(true);
                         *   }
                         * }
                         *
                         * var el = _.cloneDeepWith(document.body, customizer);
                         *
                         * console.log(el === document.body);
                         * // => false
                         * console.log(el.nodeName);
                         * // => 'BODY'
                         * console.log(el.childNodes.length);
                         * // => 20
                         */
                        function cloneDeepWith(value, customizer) {
                            customizer = typeof customizer == 'function' ? customizer : undefined;
                            return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
                        }

                        /**
                         * Checks if `object` conforms to `source` by invoking the predicate
                         * properties of `source` with the corresponding property values of `object`.
                         *
                         * **Note:** This method is equivalent to `_.conforms` when `source` is
                         * partially applied.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.14.0
                         * @category Lang
                         * @param {Object} object The object to inspect.
                         * @param {Object} source The object of property predicates to conform to.
                         * @returns {boolean} Returns `true` if `object` conforms, else `false`.
                         * @example
                         *
                         * var object = { 'a': 1, 'b': 2 };
                         *
                         * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
                         * // => true
                         *
                         * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
                         * // => false
                         */
                        function conformsTo(object, source) {
                            return source == null || baseConformsTo(object, source, keys(source));
                        }

                        /**
                         * Performs a
                         * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
                         * comparison between two values to determine if they are equivalent.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
                         * @example
                         *
                         * var object = { 'a': 1 };
                         * var other = { 'a': 1 };
                         *
                         * _.eq(object, object);
                         * // => true
                         *
                         * _.eq(object, other);
                         * // => false
                         *
                         * _.eq('a', 'a');
                         * // => true
                         *
                         * _.eq('a', Object('a'));
                         * // => false
                         *
                         * _.eq(NaN, NaN);
                         * // => true
                         */
                        function eq(value, other) {
                            return value === other || (value !== value && other !== other);
                        }

                        /**
                         * Checks if `value` is greater than `other`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.9.0
                         * @category Lang
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @returns {boolean} Returns `true` if `value` is greater than `other`,
                         *  else `false`.
                         * @see _.lt
                         * @example
                         *
                         * _.gt(3, 1);
                         * // => true
                         *
                         * _.gt(3, 3);
                         * // => false
                         *
                         * _.gt(1, 3);
                         * // => false
                         */
                        var gt = createRelationalOperation(baseGt);

                        /**
                         * Checks if `value` is greater than or equal to `other`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.9.0
                         * @category Lang
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @returns {boolean} Returns `true` if `value` is greater than or equal to
                         *  `other`, else `false`.
                         * @see _.lte
                         * @example
                         *
                         * _.gte(3, 1);
                         * // => true
                         *
                         * _.gte(3, 3);
                         * // => true
                         *
                         * _.gte(1, 3);
                         * // => false
                         */
                        var gte = createRelationalOperation(function (value, other) {
                            return value >= other;
                        });

                        /**
                         * Checks if `value` is likely an `arguments` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is an `arguments` object,
                         *  else `false`.
                         * @example
                         *
                         * _.isArguments(function() { return arguments; }());
                         * // => true
                         *
                         * _.isArguments([1, 2, 3]);
                         * // => false
                         */
                        var isArguments = baseIsArguments(function () {
                            return arguments;
                        }()) ? baseIsArguments : function (value) {
                            return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
                                !propertyIsEnumerable.call(value, 'callee');
                        };

                        /**
                         * Checks if `value` is classified as an `Array` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is an array, else `false`.
                         * @example
                         *
                         * _.isArray([1, 2, 3]);
                         * // => true
                         *
                         * _.isArray(document.body.children);
                         * // => false
                         *
                         * _.isArray('abc');
                         * // => false
                         *
                         * _.isArray(_.noop);
                         * // => false
                         */
                        var isArray = Array.isArray;

                        /**
                         * Checks if `value` is classified as an `ArrayBuffer` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.3.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
                         * @example
                         *
                         * _.isArrayBuffer(new ArrayBuffer(2));
                         * // => true
                         *
                         * _.isArrayBuffer(new Array(2));
                         * // => false
                         */
                        var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;

                        /**
                         * Checks if `value` is array-like. A value is considered array-like if it's
                         * not a function and has a `value.length` that's an integer greater than or
                         * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
                         * @example
                         *
                         * _.isArrayLike([1, 2, 3]);
                         * // => true
                         *
                         * _.isArrayLike(document.body.children);
                         * // => true
                         *
                         * _.isArrayLike('abc');
                         * // => true
                         *
                         * _.isArrayLike(_.noop);
                         * // => false
                         */
                        function isArrayLike(value) {
                            return value != null && isLength(value.length) && !isFunction(value);
                        }

                        /**
                         * This method is like `_.isArrayLike` except that it also checks if `value`
                         * is an object.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is an array-like object,
                         *  else `false`.
                         * @example
                         *
                         * _.isArrayLikeObject([1, 2, 3]);
                         * // => true
                         *
                         * _.isArrayLikeObject(document.body.children);
                         * // => true
                         *
                         * _.isArrayLikeObject('abc');
                         * // => false
                         *
                         * _.isArrayLikeObject(_.noop);
                         * // => false
                         */
                        function isArrayLikeObject(value) {
                            return isObjectLike(value) && isArrayLike(value);
                        }

                        /**
                         * Checks if `value` is classified as a boolean primitive or object.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
                         * @example
                         *
                         * _.isBoolean(false);
                         * // => true
                         *
                         * _.isBoolean(null);
                         * // => false
                         */
                        function isBoolean(value) {
                            return value === true || value === false ||
                                (isObjectLike(value) && baseGetTag(value) == boolTag);
                        }

                        /**
                         * Checks if `value` is a buffer.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.3.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
                         * @example
                         *
                         * _.isBuffer(new Buffer(2));
                         * // => true
                         *
                         * _.isBuffer(new Uint8Array(2));
                         * // => false
                         */
                        var isBuffer = nativeIsBuffer || stubFalse;

                        /**
                         * Checks if `value` is classified as a `Date` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
                         * @example
                         *
                         * _.isDate(new Date);
                         * // => true
                         *
                         * _.isDate('Mon April 23 2012');
                         * // => false
                         */
                        var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;

                        /**
                         * Checks if `value` is likely a DOM element.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
                         * @example
                         *
                         * _.isElement(document.body);
                         * // => true
                         *
                         * _.isElement('<body>');
                         * // => false
                         */
                        function isElement(value) {
                            return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
                        }

                        /**
                         * Checks if `value` is an empty object, collection, map, or set.
                         *
                         * Objects are considered empty if they have no own enumerable string keyed
                         * properties.
                         *
                         * Array-like values such as `arguments` objects, arrays, buffers, strings, or
                         * jQuery-like collections are considered empty if they have a `length` of `0`.
                         * Similarly, maps and sets are considered empty if they have a `size` of `0`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is empty, else `false`.
                         * @example
                         *
                         * _.isEmpty(null);
                         * // => true
                         *
                         * _.isEmpty(true);
                         * // => true
                         *
                         * _.isEmpty(1);
                         * // => true
                         *
                         * _.isEmpty([1, 2, 3]);
                         * // => false
                         *
                         * _.isEmpty({ 'a': 1 });
                         * // => false
                         */
                        function isEmpty(value) {
                            if (value == null) {
                                return true;
                            }
                            if (isArrayLike(value) &&
                                (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
                                    isBuffer(value) || isTypedArray(value) || isArguments(value))) {
                                return !value.length;
                            }
                            var tag = getTag(value);
                            if (tag == mapTag || tag == setTag) {
                                return !value.size;
                            }
                            if (isPrototype(value)) {
                                return !baseKeys(value).length;
                            }
                            for (var key in value) {
                                if (hasOwnProperty.call(value, key)) {
                                    return false;
                                }
                            }
                            return true;
                        }

                        /**
                         * Performs a deep comparison between two values to determine if they are
                         * equivalent.
                         *
                         * **Note:** This method supports comparing arrays, array buffers, booleans,
                         * date objects, error objects, maps, numbers, `Object` objects, regexes,
                         * sets, strings, symbols, and typed arrays. `Object` objects are compared
                         * by their own, not inherited, enumerable properties. Functions and DOM
                         * nodes are compared by strict equality, i.e. `===`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
                         * @example
                         *
                         * var object = { 'a': 1 };
                         * var other = { 'a': 1 };
                         *
                         * _.isEqual(object, other);
                         * // => true
                         *
                         * object === other;
                         * // => false
                         */
                        function isEqual(value, other) {
                            return baseIsEqual(value, other);
                        }

                        /**
                         * This method is like `_.isEqual` except that it accepts `customizer` which
                         * is invoked to compare values. If `customizer` returns `undefined`, comparisons
                         * are handled by the method instead. The `customizer` is invoked with up to
                         * six arguments: (objValue, othValue [, index|key, object, other, stack]).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @param {Function} [customizer] The function to customize comparisons.
                         * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
                         * @example
                         *
                         * function isGreeting(value) {
                         *   return /^h(?:i|ello)$/.test(value);
                         * }
                         *
                         * function customizer(objValue, othValue) {
                         *   if (isGreeting(objValue) && isGreeting(othValue)) {
                         *     return true;
                         *   }
                         * }
                         *
                         * var array = ['hello', 'goodbye'];
                         * var other = ['hi', 'goodbye'];
                         *
                         * _.isEqualWith(array, other, customizer);
                         * // => true
                         */
                        function isEqualWith(value, other, customizer) {
                            customizer = typeof customizer == 'function' ? customizer : undefined;
                            var result = customizer ? customizer(value, other) : undefined;
                            return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
                        }

                        /**
                         * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
                         * `SyntaxError`, `TypeError`, or `URIError` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
                         * @example
                         *
                         * _.isError(new Error);
                         * // => true
                         *
                         * _.isError(Error);
                         * // => false
                         */
                        function isError(value) {
                            if (!isObjectLike(value)) {
                                return false;
                            }
                            var tag = baseGetTag(value);
                            return tag == errorTag || tag == domExcTag ||
                                (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
                        }

                        /**
                         * Checks if `value` is a finite primitive number.
                         *
                         * **Note:** This method is based on
                         * [`Number.isFinite`](https://mdn.io/Number/isFinite).
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
                         * @example
                         *
                         * _.isFinite(3);
                         * // => true
                         *
                         * _.isFinite(Number.MIN_VALUE);
                         * // => true
                         *
                         * _.isFinite(Infinity);
                         * // => false
                         *
                         * _.isFinite('3');
                         * // => false
                         */
                        function isFinite(value) {
                            return typeof value == 'number' && nativeIsFinite(value);
                        }

                        /**
                         * Checks if `value` is classified as a `Function` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a function, else `false`.
                         * @example
                         *
                         * _.isFunction(_);
                         * // => true
                         *
                         * _.isFunction(/abc/);
                         * // => false
                         */
                        function isFunction(value) {
                            if (!isObject(value)) {
                                return false;
                            }
                            // The use of `Object#toString` avoids issues with the `typeof` operator
                            // in Safari 9 which returns 'object' for typed arrays and other constructors.
                            var tag = baseGetTag(value);
                            return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
                        }

                        /**
                         * Checks if `value` is an integer.
                         *
                         * **Note:** This method is based on
                         * [`Number.isInteger`](https://mdn.io/Number/isInteger).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
                         * @example
                         *
                         * _.isInteger(3);
                         * // => true
                         *
                         * _.isInteger(Number.MIN_VALUE);
                         * // => false
                         *
                         * _.isInteger(Infinity);
                         * // => false
                         *
                         * _.isInteger('3');
                         * // => false
                         */
                        function isInteger(value) {
                            return typeof value == 'number' && value == toInteger(value);
                        }

                        /**
                         * Checks if `value` is a valid array-like length.
                         *
                         * **Note:** This method is loosely based on
                         * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
                         * @example
                         *
                         * _.isLength(3);
                         * // => true
                         *
                         * _.isLength(Number.MIN_VALUE);
                         * // => false
                         *
                         * _.isLength(Infinity);
                         * // => false
                         *
                         * _.isLength('3');
                         * // => false
                         */
                        function isLength(value) {
                            return typeof value == 'number' &&
                                value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
                        }

                        /**
                         * Checks if `value` is the
                         * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
                         * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is an object, else `false`.
                         * @example
                         *
                         * _.isObject({});
                         * // => true
                         *
                         * _.isObject([1, 2, 3]);
                         * // => true
                         *
                         * _.isObject(_.noop);
                         * // => true
                         *
                         * _.isObject(null);
                         * // => false
                         */
                        function isObject(value) {
                            var type = typeof value;
                            return value != null && (type == 'object' || type == 'function');
                        }

                        /**
                         * Checks if `value` is object-like. A value is object-like if it's not `null`
                         * and has a `typeof` result of "object".
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
                         * @example
                         *
                         * _.isObjectLike({});
                         * // => true
                         *
                         * _.isObjectLike([1, 2, 3]);
                         * // => true
                         *
                         * _.isObjectLike(_.noop);
                         * // => false
                         *
                         * _.isObjectLike(null);
                         * // => false
                         */
                        function isObjectLike(value) {
                            return value != null && typeof value == 'object';
                        }

                        /**
                         * Checks if `value` is classified as a `Map` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.3.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a map, else `false`.
                         * @example
                         *
                         * _.isMap(new Map);
                         * // => true
                         *
                         * _.isMap(new WeakMap);
                         * // => false
                         */
                        var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;

                        /**
                         * Performs a partial deep comparison between `object` and `source` to
                         * determine if `object` contains equivalent property values.
                         *
                         * **Note:** This method is equivalent to `_.matches` when `source` is
                         * partially applied.
                         *
                         * Partial comparisons will match empty array and empty object `source`
                         * values against any array or object value, respectively. See `_.isEqual`
                         * for a list of supported value comparisons.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Lang
                         * @param {Object} object The object to inspect.
                         * @param {Object} source The object of property values to match.
                         * @returns {boolean} Returns `true` if `object` is a match, else `false`.
                         * @example
                         *
                         * var object = { 'a': 1, 'b': 2 };
                         *
                         * _.isMatch(object, { 'b': 2 });
                         * // => true
                         *
                         * _.isMatch(object, { 'b': 1 });
                         * // => false
                         */
                        function isMatch(object, source) {
                            return object === source || baseIsMatch(object, source, getMatchData(source));
                        }

                        /**
                         * This method is like `_.isMatch` except that it accepts `customizer` which
                         * is invoked to compare values. If `customizer` returns `undefined`, comparisons
                         * are handled by the method instead. The `customizer` is invoked with five
                         * arguments: (objValue, srcValue, index|key, object, source).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {Object} object The object to inspect.
                         * @param {Object} source The object of property values to match.
                         * @param {Function} [customizer] The function to customize comparisons.
                         * @returns {boolean} Returns `true` if `object` is a match, else `false`.
                         * @example
                         *
                         * function isGreeting(value) {
                         *   return /^h(?:i|ello)$/.test(value);
                         * }
                         *
                         * function customizer(objValue, srcValue) {
                         *   if (isGreeting(objValue) && isGreeting(srcValue)) {
                         *     return true;
                         *   }
                         * }
                         *
                         * var object = { 'greeting': 'hello' };
                         * var source = { 'greeting': 'hi' };
                         *
                         * _.isMatchWith(object, source, customizer);
                         * // => true
                         */
                        function isMatchWith(object, source, customizer) {
                            customizer = typeof customizer == 'function' ? customizer : undefined;
                            return baseIsMatch(object, source, getMatchData(source), customizer);
                        }

                        /**
                         * Checks if `value` is `NaN`.
                         *
                         * **Note:** This method is based on
                         * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
                         * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
                         * `undefined` and other non-number values.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
                         * @example
                         *
                         * _.isNaN(NaN);
                         * // => true
                         *
                         * _.isNaN(new Number(NaN));
                         * // => true
                         *
                         * isNaN(undefined);
                         * // => true
                         *
                         * _.isNaN(undefined);
                         * // => false
                         */
                        function isNaN(value) {
                            // An `NaN` primitive is the only value that is not equal to itself.
                            // Perform the `toStringTag` check first to avoid errors with some
                            // ActiveX objects in IE.
                            return isNumber(value) && value != +value;
                        }

                        /**
                         * Checks if `value` is a pristine native function.
                         *
                         * **Note:** This method can't reliably detect native functions in the presence
                         * of the core-js package because core-js circumvents this kind of detection.
                         * Despite multiple requests, the core-js maintainer has made it clear: any
                         * attempt to fix the detection will be obstructed. As a result, we're left
                         * with little choice but to throw an error. Unfortunately, this also affects
                         * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
                         * which rely on core-js.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a native function,
                         *  else `false`.
                         * @example
                         *
                         * _.isNative(Array.prototype.push);
                         * // => true
                         *
                         * _.isNative(_);
                         * // => false
                         */
                        function isNative(value) {
                            if (isMaskable(value)) {
                                throw new Error(CORE_ERROR_TEXT);
                            }
                            return baseIsNative(value);
                        }

                        /**
                         * Checks if `value` is `null`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
                         * @example
                         *
                         * _.isNull(null);
                         * // => true
                         *
                         * _.isNull(void 0);
                         * // => false
                         */
                        function isNull(value) {
                            return value === null;
                        }

                        /**
                         * Checks if `value` is `null` or `undefined`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
                         * @example
                         *
                         * _.isNil(null);
                         * // => true
                         *
                         * _.isNil(void 0);
                         * // => true
                         *
                         * _.isNil(NaN);
                         * // => false
                         */
                        function isNil(value) {
                            return value == null;
                        }

                        /**
                         * Checks if `value` is classified as a `Number` primitive or object.
                         *
                         * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
                         * classified as numbers, use the `_.isFinite` method.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a number, else `false`.
                         * @example
                         *
                         * _.isNumber(3);
                         * // => true
                         *
                         * _.isNumber(Number.MIN_VALUE);
                         * // => true
                         *
                         * _.isNumber(Infinity);
                         * // => true
                         *
                         * _.isNumber('3');
                         * // => false
                         */
                        function isNumber(value) {
                            return typeof value == 'number' ||
                                (isObjectLike(value) && baseGetTag(value) == numberTag);
                        }

                        /**
                         * Checks if `value` is a plain object, that is, an object created by the
                         * `Object` constructor or one with a `[[Prototype]]` of `null`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.8.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         * }
                         *
                         * _.isPlainObject(new Foo);
                         * // => false
                         *
                         * _.isPlainObject([1, 2, 3]);
                         * // => false
                         *
                         * _.isPlainObject({ 'x': 0, 'y': 0 });
                         * // => true
                         *
                         * _.isPlainObject(Object.create(null));
                         * // => true
                         */
                        function isPlainObject(value) {
                            if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
                                return false;
                            }
                            var proto = getPrototype(value);
                            if (proto === null) {
                                return true;
                            }
                            var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
                            return typeof Ctor == 'function' && Ctor instanceof Ctor &&
                                funcToString.call(Ctor) == objectCtorString;
                        }

                        /**
                         * Checks if `value` is classified as a `RegExp` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.1.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
                         * @example
                         *
                         * _.isRegExp(/abc/);
                         * // => true
                         *
                         * _.isRegExp('/abc/');
                         * // => false
                         */
                        var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;

                        /**
                         * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
                         * double precision number which isn't the result of a rounded unsafe integer.
                         *
                         * **Note:** This method is based on
                         * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
                         * @example
                         *
                         * _.isSafeInteger(3);
                         * // => true
                         *
                         * _.isSafeInteger(Number.MIN_VALUE);
                         * // => false
                         *
                         * _.isSafeInteger(Infinity);
                         * // => false
                         *
                         * _.isSafeInteger('3');
                         * // => false
                         */
                        function isSafeInteger(value) {
                            return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
                        }

                        /**
                         * Checks if `value` is classified as a `Set` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.3.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a set, else `false`.
                         * @example
                         *
                         * _.isSet(new Set);
                         * // => true
                         *
                         * _.isSet(new WeakSet);
                         * // => false
                         */
                        var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;

                        /**
                         * Checks if `value` is classified as a `String` primitive or object.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a string, else `false`.
                         * @example
                         *
                         * _.isString('abc');
                         * // => true
                         *
                         * _.isString(1);
                         * // => false
                         */
                        function isString(value) {
                            return typeof value == 'string' ||
                                (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
                        }

                        /**
                         * Checks if `value` is classified as a `Symbol` primitive or object.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
                         * @example
                         *
                         * _.isSymbol(Symbol.iterator);
                         * // => true
                         *
                         * _.isSymbol('abc');
                         * // => false
                         */
                        function isSymbol(value) {
                            return typeof value == 'symbol' ||
                                (isObjectLike(value) && baseGetTag(value) == symbolTag);
                        }

                        /**
                         * Checks if `value` is classified as a typed array.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
                         * @example
                         *
                         * _.isTypedArray(new Uint8Array);
                         * // => true
                         *
                         * _.isTypedArray([]);
                         * // => false
                         */
                        var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

                        /**
                         * Checks if `value` is `undefined`.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
                         * @example
                         *
                         * _.isUndefined(void 0);
                         * // => true
                         *
                         * _.isUndefined(null);
                         * // => false
                         */
                        function isUndefined(value) {
                            return value === undefined;
                        }

                        /**
                         * Checks if `value` is classified as a `WeakMap` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.3.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
                         * @example
                         *
                         * _.isWeakMap(new WeakMap);
                         * // => true
                         *
                         * _.isWeakMap(new Map);
                         * // => false
                         */
                        function isWeakMap(value) {
                            return isObjectLike(value) && getTag(value) == weakMapTag;
                        }

                        /**
                         * Checks if `value` is classified as a `WeakSet` object.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.3.0
                         * @category Lang
                         * @param {*} value The value to check.
                         * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
                         * @example
                         *
                         * _.isWeakSet(new WeakSet);
                         * // => true
                         *
                         * _.isWeakSet(new Set);
                         * // => false
                         */
                        function isWeakSet(value) {
                            return isObjectLike(value) && baseGetTag(value) == weakSetTag;
                        }

                        /**
                         * Checks if `value` is less than `other`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.9.0
                         * @category Lang
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @returns {boolean} Returns `true` if `value` is less than `other`,
                         *  else `false`.
                         * @see _.gt
                         * @example
                         *
                         * _.lt(1, 3);
                         * // => true
                         *
                         * _.lt(3, 3);
                         * // => false
                         *
                         * _.lt(3, 1);
                         * // => false
                         */
                        var lt = createRelationalOperation(baseLt);

                        /**
                         * Checks if `value` is less than or equal to `other`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.9.0
                         * @category Lang
                         * @param {*} value The value to compare.
                         * @param {*} other The other value to compare.
                         * @returns {boolean} Returns `true` if `value` is less than or equal to
                         *  `other`, else `false`.
                         * @see _.gte
                         * @example
                         *
                         * _.lte(1, 3);
                         * // => true
                         *
                         * _.lte(3, 3);
                         * // => true
                         *
                         * _.lte(3, 1);
                         * // => false
                         */
                        var lte = createRelationalOperation(function (value, other) {
                            return value <= other;
                        });

                        /**
                         * Converts `value` to an array.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Lang
                         * @param {*} value The value to convert.
                         * @returns {Array} Returns the converted array.
                         * @example
                         *
                         * _.toArray({ 'a': 1, 'b': 2 });
                         * // => [1, 2]
                         *
                         * _.toArray('abc');
                         * // => ['a', 'b', 'c']
                         *
                         * _.toArray(1);
                         * // => []
                         *
                         * _.toArray(null);
                         * // => []
                         */
                        function toArray(value) {
                            if (!value) {
                                return [];
                            }
                            if (isArrayLike(value)) {
                                return isString(value) ? stringToArray(value) : copyArray(value);
                            }
                            if (symIterator && value[symIterator]) {
                                return iteratorToArray(value[symIterator]());
                            }
                            var tag = getTag(value),
                                func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);

                            return func(value);
                        }

                        /**
                         * Converts `value` to a finite number.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.12.0
                         * @category Lang
                         * @param {*} value The value to convert.
                         * @returns {number} Returns the converted number.
                         * @example
                         *
                         * _.toFinite(3.2);
                         * // => 3.2
                         *
                         * _.toFinite(Number.MIN_VALUE);
                         * // => 5e-324
                         *
                         * _.toFinite(Infinity);
                         * // => 1.7976931348623157e+308
                         *
                         * _.toFinite('3.2');
                         * // => 3.2
                         */
                        function toFinite(value) {
                            if (!value) {
                                return value === 0 ? value : 0;
                            }
                            value = toNumber(value);
                            if (value === INFINITY || value === -INFINITY) {
                                var sign = (value < 0 ? -1 : 1);
                                return sign * MAX_INTEGER;
                            }
                            return value === value ? value : 0;
                        }

                        /**
                         * Converts `value` to an integer.
                         *
                         * **Note:** This method is loosely based on
                         * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to convert.
                         * @returns {number} Returns the converted integer.
                         * @example
                         *
                         * _.toInteger(3.2);
                         * // => 3
                         *
                         * _.toInteger(Number.MIN_VALUE);
                         * // => 0
                         *
                         * _.toInteger(Infinity);
                         * // => 1.7976931348623157e+308
                         *
                         * _.toInteger('3.2');
                         * // => 3
                         */
                        function toInteger(value) {
                            var result = toFinite(value),
                                remainder = result % 1;

                            return result === result ? (remainder ? result - remainder : result) : 0;
                        }

                        /**
                         * Converts `value` to an integer suitable for use as the length of an
                         * array-like object.
                         *
                         * **Note:** This method is based on
                         * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to convert.
                         * @returns {number} Returns the converted integer.
                         * @example
                         *
                         * _.toLength(3.2);
                         * // => 3
                         *
                         * _.toLength(Number.MIN_VALUE);
                         * // => 0
                         *
                         * _.toLength(Infinity);
                         * // => 4294967295
                         *
                         * _.toLength('3.2');
                         * // => 3
                         */
                        function toLength(value) {
                            return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
                        }

                        /**
                         * Converts `value` to a number.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to process.
                         * @returns {number} Returns the number.
                         * @example
                         *
                         * _.toNumber(3.2);
                         * // => 3.2
                         *
                         * _.toNumber(Number.MIN_VALUE);
                         * // => 5e-324
                         *
                         * _.toNumber(Infinity);
                         * // => Infinity
                         *
                         * _.toNumber('3.2');
                         * // => 3.2
                         */
                        function toNumber(value) {
                            if (typeof value == 'number') {
                                return value;
                            }
                            if (isSymbol(value)) {
                                return NAN;
                            }
                            if (isObject(value)) {
                                var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
                                value = isObject(other) ? (other + '') : other;
                            }
                            if (typeof value != 'string') {
                                return value === 0 ? value : +value;
                            }
                            value = baseTrim(value);
                            var isBinary = reIsBinary.test(value);
                            return (isBinary || reIsOctal.test(value))
                                ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
                                : (reIsBadHex.test(value) ? NAN : +value);
                        }

                        /**
                         * Converts `value` to a plain object flattening inherited enumerable string
                         * keyed properties of `value` to own properties of the plain object.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Lang
                         * @param {*} value The value to convert.
                         * @returns {Object} Returns the converted plain object.
                         * @example
                         *
                         * function Foo() {
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.assign({ 'a': 1 }, new Foo);
                         * // => { 'a': 1, 'b': 2 }
                         *
                         * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
                         * // => { 'a': 1, 'b': 2, 'c': 3 }
                         */
                        function toPlainObject(value) {
                            return copyObject(value, keysIn(value));
                        }

                        /**
                         * Converts `value` to a safe integer. A safe integer can be compared and
                         * represented correctly.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to convert.
                         * @returns {number} Returns the converted integer.
                         * @example
                         *
                         * _.toSafeInteger(3.2);
                         * // => 3
                         *
                         * _.toSafeInteger(Number.MIN_VALUE);
                         * // => 0
                         *
                         * _.toSafeInteger(Infinity);
                         * // => 9007199254740991
                         *
                         * _.toSafeInteger('3.2');
                         * // => 3
                         */
                        function toSafeInteger(value) {
                            return value
                                ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
                                : (value === 0 ? value : 0);
                        }

                        /**
                         * Converts `value` to a string. An empty string is returned for `null`
                         * and `undefined` values. The sign of `-0` is preserved.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Lang
                         * @param {*} value The value to convert.
                         * @returns {string} Returns the converted string.
                         * @example
                         *
                         * _.toString(null);
                         * // => ''
                         *
                         * _.toString(-0);
                         * // => '-0'
                         *
                         * _.toString([1, 2, 3]);
                         * // => '1,2,3'
                         */
                        function toString(value) {
                            return value == null ? '' : baseToString(value);
                        }

                        /*------------------------------------------------------------------------*/

                        /**
                         * Assigns own enumerable string keyed properties of source objects to the
                         * destination object. Source objects are applied from left to right.
                         * Subsequent sources overwrite property assignments of previous sources.
                         *
                         * **Note:** This method mutates `object` and is loosely based on
                         * [`Object.assign`](https://mdn.io/Object/assign).
                         *
                         * @static
                         * @memberOf _
                         * @since 0.10.0
                         * @category Object
                         * @param {Object} object The destination object.
                         * @param {...Object} [sources] The source objects.
                         * @returns {Object} Returns `object`.
                         * @see _.assignIn
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         * }
                         *
                         * function Bar() {
                         *   this.c = 3;
                         * }
                         *
                         * Foo.prototype.b = 2;
                         * Bar.prototype.d = 4;
                         *
                         * _.assign({ 'a': 0 }, new Foo, new Bar);
                         * // => { 'a': 1, 'c': 3 }
                         */
                        var assign = createAssigner(function (object, source) {
                            if (isPrototype(source) || isArrayLike(source)) {
                                copyObject(source, keys(source), object);
                                return;
                            }
                            for (var key in source) {
                                if (hasOwnProperty.call(source, key)) {
                                    assignValue(object, key, source[key]);
                                }
                            }
                        });

                        /**
                         * This method is like `_.assign` except that it iterates over own and
                         * inherited source properties.
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @alias extend
                         * @category Object
                         * @param {Object} object The destination object.
                         * @param {...Object} [sources] The source objects.
                         * @returns {Object} Returns `object`.
                         * @see _.assign
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         * }
                         *
                         * function Bar() {
                         *   this.c = 3;
                         * }
                         *
                         * Foo.prototype.b = 2;
                         * Bar.prototype.d = 4;
                         *
                         * _.assignIn({ 'a': 0 }, new Foo, new Bar);
                         * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
                         */
                        var assignIn = createAssigner(function (object, source) {
                            copyObject(source, keysIn(source), object);
                        });

                        /**
                         * This method is like `_.assignIn` except that it accepts `customizer`
                         * which is invoked to produce the assigned values. If `customizer` returns
                         * `undefined`, assignment is handled by the method instead. The `customizer`
                         * is invoked with five arguments: (objValue, srcValue, key, object, source).
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @alias extendWith
                         * @category Object
                         * @param {Object} object The destination object.
                         * @param {...Object} sources The source objects.
                         * @param {Function} [customizer] The function to customize assigned values.
                         * @returns {Object} Returns `object`.
                         * @see _.assignWith
                         * @example
                         *
                         * function customizer(objValue, srcValue) {
                         *   return _.isUndefined(objValue) ? srcValue : objValue;
                         * }
                         *
                         * var defaults = _.partialRight(_.assignInWith, customizer);
                         *
                         * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
                         * // => { 'a': 1, 'b': 2 }
                         */
                        var assignInWith = createAssigner(function (object, source, srcIndex, customizer) {
                            copyObject(source, keysIn(source), object, customizer);
                        });

                        /**
                         * This method is like `_.assign` except that it accepts `customizer`
                         * which is invoked to produce the assigned values. If `customizer` returns
                         * `undefined`, assignment is handled by the method instead. The `customizer`
                         * is invoked with five arguments: (objValue, srcValue, key, object, source).
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Object
                         * @param {Object} object The destination object.
                         * @param {...Object} sources The source objects.
                         * @param {Function} [customizer] The function to customize assigned values.
                         * @returns {Object} Returns `object`.
                         * @see _.assignInWith
                         * @example
                         *
                         * function customizer(objValue, srcValue) {
                         *   return _.isUndefined(objValue) ? srcValue : objValue;
                         * }
                         *
                         * var defaults = _.partialRight(_.assignWith, customizer);
                         *
                         * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
                         * // => { 'a': 1, 'b': 2 }
                         */
                        var assignWith = createAssigner(function (object, source, srcIndex, customizer) {
                            copyObject(source, keys(source), object, customizer);
                        });

                        /**
                         * Creates an array of values corresponding to `paths` of `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 1.0.0
                         * @category Object
                         * @param {Object} object The object to iterate over.
                         * @param {...(string|string[])} [paths] The property paths to pick.
                         * @returns {Array} Returns the picked values.
                         * @example
                         *
                         * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
                         *
                         * _.at(object, ['a[0].b.c', 'a[1]']);
                         * // => [3, 4]
                         */
                        var at = flatRest(baseAt);

                        /**
                         * Creates an object that inherits from the `prototype` object. If a
                         * `properties` object is given, its own enumerable string keyed properties
                         * are assigned to the created object.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.3.0
                         * @category Object
                         * @param {Object} prototype The object to inherit from.
                         * @param {Object} [properties] The properties to assign to the object.
                         * @returns {Object} Returns the new object.
                         * @example
                         *
                         * function Shape() {
                         *   this.x = 0;
                         *   this.y = 0;
                         * }
                         *
                         * function Circle() {
                         *   Shape.call(this);
                         * }
                         *
                         * Circle.prototype = _.create(Shape.prototype, {
                         *   'constructor': Circle
                         * });
                         *
                         * var circle = new Circle;
                         * circle instanceof Circle;
                         * // => true
                         *
                         * circle instanceof Shape;
                         * // => true
                         */
                        function create(prototype, properties) {
                            var result = baseCreate(prototype);
                            return properties == null ? result : baseAssign(result, properties);
                        }

                        /**
                         * Assigns own and inherited enumerable string keyed properties of source
                         * objects to the destination object for all destination properties that
                         * resolve to `undefined`. Source objects are applied from left to right.
                         * Once a property is set, additional values of the same property are ignored.
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Object
                         * @param {Object} object The destination object.
                         * @param {...Object} [sources] The source objects.
                         * @returns {Object} Returns `object`.
                         * @see _.defaultsDeep
                         * @example
                         *
                         * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
                         * // => { 'a': 1, 'b': 2 }
                         */
                        var defaults = baseRest(function (object, sources) {
                            object = Object(object);

                            var index = -1;
                            var length = sources.length;
                            var guard = length > 2 ? sources[2] : undefined;

                            if (guard && isIterateeCall(sources[0], sources[1], guard)) {
                                length = 1;
                            }

                            while (++index < length) {
                                var source = sources[index];
                                var props = keysIn(source);
                                var propsIndex = -1;
                                var propsLength = props.length;

                                while (++propsIndex < propsLength) {
                                    var key = props[propsIndex];
                                    var value = object[key];

                                    if (value === undefined ||
                                        (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
                                        object[key] = source[key];
                                    }
                                }
                            }

                            return object;
                        });

                        /**
                         * This method is like `_.defaults` except that it recursively assigns
                         * default properties.
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.10.0
                         * @category Object
                         * @param {Object} object The destination object.
                         * @param {...Object} [sources] The source objects.
                         * @returns {Object} Returns `object`.
                         * @see _.defaults
                         * @example
                         *
                         * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
                         * // => { 'a': { 'b': 2, 'c': 3 } }
                         */
                        var defaultsDeep = baseRest(function (args) {
                            args.push(undefined, customDefaultsMerge);
                            return apply(mergeWith, undefined, args);
                        });

                        /**
                         * This method is like `_.find` except that it returns the key of the first
                         * element `predicate` returns truthy for instead of the element itself.
                         *
                         * @static
                         * @memberOf _
                         * @since 1.1.0
                         * @category Object
                         * @param {Object} object The object to inspect.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {string|undefined} Returns the key of the matched element,
                         *  else `undefined`.
                         * @example
                         *
                         * var users = {
                         *   'barney':  { 'age': 36, 'active': true },
                         *   'fred':    { 'age': 40, 'active': false },
                         *   'pebbles': { 'age': 1,  'active': true }
                         * };
                         *
                         * _.findKey(users, function(o) { return o.age < 40; });
                         * // => 'barney' (iteration order is not guaranteed)
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.findKey(users, { 'age': 1, 'active': true });
                         * // => 'pebbles'
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.findKey(users, ['active', false]);
                         * // => 'fred'
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.findKey(users, 'active');
                         * // => 'barney'
                         */
                        function findKey(object, predicate) {
                            return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
                        }

                        /**
                         * This method is like `_.findKey` except that it iterates over elements of
                         * a collection in the opposite order.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @category Object
                         * @param {Object} object The object to inspect.
                         * @param {Function} [predicate=_.identity] The function invoked per iteration.
                         * @returns {string|undefined} Returns the key of the matched element,
                         *  else `undefined`.
                         * @example
                         *
                         * var users = {
                         *   'barney':  { 'age': 36, 'active': true },
                         *   'fred':    { 'age': 40, 'active': false },
                         *   'pebbles': { 'age': 1,  'active': true }
                         * };
                         *
                         * _.findLastKey(users, function(o) { return o.age < 40; });
                         * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.findLastKey(users, { 'age': 36, 'active': true });
                         * // => 'barney'
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.findLastKey(users, ['active', false]);
                         * // => 'fred'
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.findLastKey(users, 'active');
                         * // => 'pebbles'
                         */
                        function findLastKey(object, predicate) {
                            return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
                        }

                        /**
                         * Iterates over own and inherited enumerable string keyed properties of an
                         * object and invokes `iteratee` for each property. The iteratee is invoked
                         * with three arguments: (value, key, object). Iteratee functions may exit
                         * iteration early by explicitly returning `false`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.3.0
                         * @category Object
                         * @param {Object} object The object to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Object} Returns `object`.
                         * @see _.forInRight
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.forIn(new Foo, function(value, key) {
                         *   console.log(key);
                         * });
                         * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
                         */
                        function forIn(object, iteratee) {
                            return object == null
                                ? object
                                : baseFor(object, getIteratee(iteratee, 3), keysIn);
                        }

                        /**
                         * This method is like `_.forIn` except that it iterates over properties of
                         * `object` in the opposite order.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @category Object
                         * @param {Object} object The object to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Object} Returns `object`.
                         * @see _.forIn
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.forInRight(new Foo, function(value, key) {
                         *   console.log(key);
                         * });
                         * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
                         */
                        function forInRight(object, iteratee) {
                            return object == null
                                ? object
                                : baseForRight(object, getIteratee(iteratee, 3), keysIn);
                        }

                        /**
                         * Iterates over own enumerable string keyed properties of an object and
                         * invokes `iteratee` for each property. The iteratee is invoked with three
                         * arguments: (value, key, object). Iteratee functions may exit iteration
                         * early by explicitly returning `false`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.3.0
                         * @category Object
                         * @param {Object} object The object to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Object} Returns `object`.
                         * @see _.forOwnRight
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.forOwn(new Foo, function(value, key) {
                         *   console.log(key);
                         * });
                         * // => Logs 'a' then 'b' (iteration order is not guaranteed).
                         */
                        function forOwn(object, iteratee) {
                            return object && baseForOwn(object, getIteratee(iteratee, 3));
                        }

                        /**
                         * This method is like `_.forOwn` except that it iterates over properties of
                         * `object` in the opposite order.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.0.0
                         * @category Object
                         * @param {Object} object The object to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Object} Returns `object`.
                         * @see _.forOwn
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.forOwnRight(new Foo, function(value, key) {
                         *   console.log(key);
                         * });
                         * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
                         */
                        function forOwnRight(object, iteratee) {
                            return object && baseForOwnRight(object, getIteratee(iteratee, 3));
                        }

                        /**
                         * Creates an array of function property names from own enumerable properties
                         * of `object`.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Object
                         * @param {Object} object The object to inspect.
                         * @returns {Array} Returns the function names.
                         * @see _.functionsIn
                         * @example
                         *
                         * function Foo() {
                         *   this.a = _.constant('a');
                         *   this.b = _.constant('b');
                         * }
                         *
                         * Foo.prototype.c = _.constant('c');
                         *
                         * _.functions(new Foo);
                         * // => ['a', 'b']
                         */
                        function functions(object) {
                            return object == null ? [] : baseFunctions(object, keys(object));
                        }

                        /**
                         * Creates an array of function property names from own and inherited
                         * enumerable properties of `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Object
                         * @param {Object} object The object to inspect.
                         * @returns {Array} Returns the function names.
                         * @see _.functions
                         * @example
                         *
                         * function Foo() {
                         *   this.a = _.constant('a');
                         *   this.b = _.constant('b');
                         * }
                         *
                         * Foo.prototype.c = _.constant('c');
                         *
                         * _.functionsIn(new Foo);
                         * // => ['a', 'b', 'c']
                         */
                        function functionsIn(object) {
                            return object == null ? [] : baseFunctions(object, keysIn(object));
                        }

                        /**
                         * Gets the value at `path` of `object`. If the resolved value is
                         * `undefined`, the `defaultValue` is returned in its place.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.7.0
                         * @category Object
                         * @param {Object} object The object to query.
                         * @param {Array|string} path The path of the property to get.
                         * @param {*} [defaultValue] The value returned for `undefined` resolved values.
                         * @returns {*} Returns the resolved value.
                         * @example
                         *
                         * var object = { 'a': [{ 'b': { 'c': 3 } }] };
                         *
                         * _.get(object, 'a[0].b.c');
                         * // => 3
                         *
                         * _.get(object, ['a', '0', 'b', 'c']);
                         * // => 3
                         *
                         * _.get(object, 'a.b.c', 'default');
                         * // => 'default'
                         */
                        function get(object, path, defaultValue) {
                            var result = object == null ? undefined : baseGet(object, path);
                            return result === undefined ? defaultValue : result;
                        }

                        /**
                         * Checks if `path` is a direct property of `object`.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Object
                         * @param {Object} object The object to query.
                         * @param {Array|string} path The path to check.
                         * @returns {boolean} Returns `true` if `path` exists, else `false`.
                         * @example
                         *
                         * var object = { 'a': { 'b': 2 } };
                         * var other = _.create({ 'a': _.create({ 'b': 2 }) });
                         *
                         * _.has(object, 'a');
                         * // => true
                         *
                         * _.has(object, 'a.b');
                         * // => true
                         *
                         * _.has(object, ['a', 'b']);
                         * // => true
                         *
                         * _.has(other, 'a');
                         * // => false
                         */
                        function has(object, path) {
                            return object != null && hasPath(object, path, baseHas);
                        }

                        /**
                         * Checks if `path` is a direct or inherited property of `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Object
                         * @param {Object} object The object to query.
                         * @param {Array|string} path The path to check.
                         * @returns {boolean} Returns `true` if `path` exists, else `false`.
                         * @example
                         *
                         * var object = _.create({ 'a': _.create({ 'b': 2 }) });
                         *
                         * _.hasIn(object, 'a');
                         * // => true
                         *
                         * _.hasIn(object, 'a.b');
                         * // => true
                         *
                         * _.hasIn(object, ['a', 'b']);
                         * // => true
                         *
                         * _.hasIn(object, 'b');
                         * // => false
                         */
                        function hasIn(object, path) {
                            return object != null && hasPath(object, path, baseHasIn);
                        }

                        /**
                         * Creates an object composed of the inverted keys and values of `object`.
                         * If `object` contains duplicate values, subsequent values overwrite
                         * property assignments of previous values.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.7.0
                         * @category Object
                         * @param {Object} object The object to invert.
                         * @returns {Object} Returns the new inverted object.
                         * @example
                         *
                         * var object = { 'a': 1, 'b': 2, 'c': 1 };
                         *
                         * _.invert(object);
                         * // => { '1': 'c', '2': 'b' }
                         */
                        var invert = createInverter(function (result, value, key) {
                            if (value != null &&
                                typeof value.toString != 'function') {
                                value = nativeObjectToString.call(value);
                            }

                            result[value] = key;
                        }, constant(identity));

                        /**
                         * This method is like `_.invert` except that the inverted object is generated
                         * from the results of running each element of `object` thru `iteratee`. The
                         * corresponding inverted value of each inverted key is an array of keys
                         * responsible for generating the inverted value. The iteratee is invoked
                         * with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.1.0
                         * @category Object
                         * @param {Object} object The object to invert.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {Object} Returns the new inverted object.
                         * @example
                         *
                         * var object = { 'a': 1, 'b': 2, 'c': 1 };
                         *
                         * _.invertBy(object);
                         * // => { '1': ['a', 'c'], '2': ['b'] }
                         *
                         * _.invertBy(object, function(value) {
                         *   return 'group' + value;
                         * });
                         * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
                         */
                        var invertBy = createInverter(function (result, value, key) {
                            if (value != null &&
                                typeof value.toString != 'function') {
                                value = nativeObjectToString.call(value);
                            }

                            if (hasOwnProperty.call(result, value)) {
                                result[value].push(key);
                            } else {
                                result[value] = [key];
                            }
                        }, getIteratee);

                        /**
                         * Invokes the method at `path` of `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Object
                         * @param {Object} object The object to query.
                         * @param {Array|string} path The path of the method to invoke.
                         * @param {...*} [args] The arguments to invoke the method with.
                         * @returns {*} Returns the result of the invoked method.
                         * @example
                         *
                         * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
                         *
                         * _.invoke(object, 'a[0].b.c.slice', 1, 3);
                         * // => [2, 3]
                         */
                        var invoke = baseRest(baseInvoke);

                        /**
                         * Creates an array of the own enumerable property names of `object`.
                         *
                         * **Note:** Non-object values are coerced to objects. See the
                         * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
                         * for more details.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Object
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of property names.
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.keys(new Foo);
                         * // => ['a', 'b'] (iteration order is not guaranteed)
                         *
                         * _.keys('hi');
                         * // => ['0', '1']
                         */
                        function keys(object) {
                            return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
                        }

                        /**
                         * Creates an array of the own and inherited enumerable property names of `object`.
                         *
                         * **Note:** Non-object values are coerced to objects.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Object
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of property names.
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.keysIn(new Foo);
                         * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
                         */
                        function keysIn(object) {
                            return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
                        }

                        /**
                         * The opposite of `_.mapValues`; this method creates an object with the
                         * same values as `object` and keys generated by running each own enumerable
                         * string keyed property of `object` thru `iteratee`. The iteratee is invoked
                         * with three arguments: (value, key, object).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.8.0
                         * @category Object
                         * @param {Object} object The object to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Object} Returns the new mapped object.
                         * @see _.mapValues
                         * @example
                         *
                         * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
                         *   return key + value;
                         * });
                         * // => { 'a1': 1, 'b2': 2 }
                         */
                        function mapKeys(object, iteratee) {
                            var result = {};
                            iteratee = getIteratee(iteratee, 3);

                            baseForOwn(object, function (value, key, object) {
                                baseAssignValue(result, iteratee(value, key, object), value);
                            });
                            return result;
                        }

                        /**
                         * Creates an object with the same keys as `object` and values generated
                         * by running each own enumerable string keyed property of `object` thru
                         * `iteratee`. The iteratee is invoked with three arguments:
                         * (value, key, object).
                         *
                         * @static
                         * @memberOf _
                         * @since 2.4.0
                         * @category Object
                         * @param {Object} object The object to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Object} Returns the new mapped object.
                         * @see _.mapKeys
                         * @example
                         *
                         * var users = {
                         *   'fred':    { 'user': 'fred',    'age': 40 },
                         *   'pebbles': { 'user': 'pebbles', 'age': 1 }
                         * };
                         *
                         * _.mapValues(users, function(o) { return o.age; });
                         * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.mapValues(users, 'age');
                         * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
                         */
                        function mapValues(object, iteratee) {
                            var result = {};
                            iteratee = getIteratee(iteratee, 3);

                            baseForOwn(object, function (value, key, object) {
                                baseAssignValue(result, key, iteratee(value, key, object));
                            });
                            return result;
                        }

                        /**
                         * This method is like `_.assign` except that it recursively merges own and
                         * inherited enumerable string keyed properties of source objects into the
                         * destination object. Source properties that resolve to `undefined` are
                         * skipped if a destination value exists. Array and plain object properties
                         * are merged recursively. Other objects and value types are overridden by
                         * assignment. Source objects are applied from left to right. Subsequent
                         * sources overwrite property assignments of previous sources.
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.5.0
                         * @category Object
                         * @param {Object} object The destination object.
                         * @param {...Object} [sources] The source objects.
                         * @returns {Object} Returns `object`.
                         * @example
                         *
                         * var object = {
                         *   'a': [{ 'b': 2 }, { 'd': 4 }]
                         * };
                         *
                         * var other = {
                         *   'a': [{ 'c': 3 }, { 'e': 5 }]
                         * };
                         *
                         * _.merge(object, other);
                         * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
                         */
                        var merge = createAssigner(function (object, source, srcIndex) {
                            baseMerge(object, source, srcIndex);
                        });

                        /**
                         * This method is like `_.merge` except that it accepts `customizer` which
                         * is invoked to produce the merged values of the destination and source
                         * properties. If `customizer` returns `undefined`, merging is handled by the
                         * method instead. The `customizer` is invoked with six arguments:
                         * (objValue, srcValue, key, object, source, stack).
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Object
                         * @param {Object} object The destination object.
                         * @param {...Object} sources The source objects.
                         * @param {Function} customizer The function to customize assigned values.
                         * @returns {Object} Returns `object`.
                         * @example
                         *
                         * function customizer(objValue, srcValue) {
                         *   if (_.isArray(objValue)) {
                         *     return objValue.concat(srcValue);
                         *   }
                         * }
                         *
                         * var object = { 'a': [1], 'b': [2] };
                         * var other = { 'a': [3], 'b': [4] };
                         *
                         * _.mergeWith(object, other, customizer);
                         * // => { 'a': [1, 3], 'b': [2, 4] }
                         */
                        var mergeWith = createAssigner(function (object, source, srcIndex, customizer) {
                            baseMerge(object, source, srcIndex, customizer);
                        });

                        /**
                         * The opposite of `_.pick`; this method creates an object composed of the
                         * own and inherited enumerable property paths of `object` that are not omitted.
                         *
                         * **Note:** This method is considerably slower than `_.pick`.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Object
                         * @param {Object} object The source object.
                         * @param {...(string|string[])} [paths] The property paths to omit.
                         * @returns {Object} Returns the new object.
                         * @example
                         *
                         * var object = { 'a': 1, 'b': '2', 'c': 3 };
                         *
                         * _.omit(object, ['a', 'c']);
                         * // => { 'b': '2' }
                         */
                        var omit = flatRest(function (object, paths) {
                            var result = {};
                            if (object == null) {
                                return result;
                            }
                            var isDeep = false;
                            paths = arrayMap(paths, function (path) {
                                path = castPath(path, object);
                                isDeep || (isDeep = path.length > 1);
                                return path;
                            });
                            copyObject(object, getAllKeysIn(object), result);
                            if (isDeep) {
                                result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
                            }
                            var length = paths.length;
                            while (length--) {
                                baseUnset(result, paths[length]);
                            }
                            return result;
                        });

                        /**
                         * The opposite of `_.pickBy`; this method creates an object composed of
                         * the own and inherited enumerable string keyed properties of `object` that
                         * `predicate` doesn't return truthy for. The predicate is invoked with two
                         * arguments: (value, key).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Object
                         * @param {Object} object The source object.
                         * @param {Function} [predicate=_.identity] The function invoked per property.
                         * @returns {Object} Returns the new object.
                         * @example
                         *
                         * var object = { 'a': 1, 'b': '2', 'c': 3 };
                         *
                         * _.omitBy(object, _.isNumber);
                         * // => { 'b': '2' }
                         */
                        function omitBy(object, predicate) {
                            return pickBy(object, negate(getIteratee(predicate)));
                        }

                        /**
                         * Creates an object composed of the picked `object` properties.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Object
                         * @param {Object} object The source object.
                         * @param {...(string|string[])} [paths] The property paths to pick.
                         * @returns {Object} Returns the new object.
                         * @example
                         *
                         * var object = { 'a': 1, 'b': '2', 'c': 3 };
                         *
                         * _.pick(object, ['a', 'c']);
                         * // => { 'a': 1, 'c': 3 }
                         */
                        var pick = flatRest(function (object, paths) {
                            return object == null ? {} : basePick(object, paths);
                        });

                        /**
                         * Creates an object composed of the `object` properties `predicate` returns
                         * truthy for. The predicate is invoked with two arguments: (value, key).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Object
                         * @param {Object} object The source object.
                         * @param {Function} [predicate=_.identity] The function invoked per property.
                         * @returns {Object} Returns the new object.
                         * @example
                         *
                         * var object = { 'a': 1, 'b': '2', 'c': 3 };
                         *
                         * _.pickBy(object, _.isNumber);
                         * // => { 'a': 1, 'c': 3 }
                         */
                        function pickBy(object, predicate) {
                            if (object == null) {
                                return {};
                            }
                            var props = arrayMap(getAllKeysIn(object), function (prop) {
                                return [prop];
                            });
                            predicate = getIteratee(predicate);
                            return basePickBy(object, props, function (value, path) {
                                return predicate(value, path[0]);
                            });
                        }

                        /**
                         * This method is like `_.get` except that if the resolved value is a
                         * function it's invoked with the `this` binding of its parent object and
                         * its result is returned.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Object
                         * @param {Object} object The object to query.
                         * @param {Array|string} path The path of the property to resolve.
                         * @param {*} [defaultValue] The value returned for `undefined` resolved values.
                         * @returns {*} Returns the resolved value.
                         * @example
                         *
                         * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
                         *
                         * _.result(object, 'a[0].b.c1');
                         * // => 3
                         *
                         * _.result(object, 'a[0].b.c2');
                         * // => 4
                         *
                         * _.result(object, 'a[0].b.c3', 'default');
                         * // => 'default'
                         *
                         * _.result(object, 'a[0].b.c3', _.constant('default'));
                         * // => 'default'
                         */
                        function result(object, path, defaultValue) {
                            path = castPath(path, object);

                            var index = -1,
                                length = path.length;

                            // Ensure the loop is entered when path is empty.
                            if (!length) {
                                length = 1;
                                object = undefined;
                            }
                            while (++index < length) {
                                var value = object == null ? undefined : object[toKey(path[index])];
                                if (value === undefined) {
                                    index = length;
                                    value = defaultValue;
                                }
                                object = isFunction(value) ? value.call(object) : value;
                            }
                            return object;
                        }

                        /**
                         * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
                         * it's created. Arrays are created for missing index properties while objects
                         * are created for all other missing properties. Use `_.setWith` to customize
                         * `path` creation.
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.7.0
                         * @category Object
                         * @param {Object} object The object to modify.
                         * @param {Array|string} path The path of the property to set.
                         * @param {*} value The value to set.
                         * @returns {Object} Returns `object`.
                         * @example
                         *
                         * var object = { 'a': [{ 'b': { 'c': 3 } }] };
                         *
                         * _.set(object, 'a[0].b.c', 4);
                         * console.log(object.a[0].b.c);
                         * // => 4
                         *
                         * _.set(object, ['x', '0', 'y', 'z'], 5);
                         * console.log(object.x[0].y.z);
                         * // => 5
                         */
                        function set(object, path, value) {
                            return object == null ? object : baseSet(object, path, value);
                        }

                        /**
                         * This method is like `_.set` except that it accepts `customizer` which is
                         * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
                         * path creation is handled by the method instead. The `customizer` is invoked
                         * with three arguments: (nsValue, key, nsObject).
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Object
                         * @param {Object} object The object to modify.
                         * @param {Array|string} path The path of the property to set.
                         * @param {*} value The value to set.
                         * @param {Function} [customizer] The function to customize assigned values.
                         * @returns {Object} Returns `object`.
                         * @example
                         *
                         * var object = {};
                         *
                         * _.setWith(object, '[0][1]', 'a', Object);
                         * // => { '0': { '1': 'a' } }
                         */
                        function setWith(object, path, value, customizer) {
                            customizer = typeof customizer == 'function' ? customizer : undefined;
                            return object == null ? object : baseSet(object, path, value, customizer);
                        }

                        /**
                         * Creates an array of own enumerable string keyed-value pairs for `object`
                         * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
                         * entries are returned.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @alias entries
                         * @category Object
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the key-value pairs.
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.toPairs(new Foo);
                         * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
                         */
                        var toPairs = createToPairs(keys);

                        /**
                         * Creates an array of own and inherited enumerable string keyed-value pairs
                         * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
                         * or set, its entries are returned.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @alias entriesIn
                         * @category Object
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the key-value pairs.
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.toPairsIn(new Foo);
                         * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
                         */
                        var toPairsIn = createToPairs(keysIn);

                        /**
                         * An alternative to `_.reduce`; this method transforms `object` to a new
                         * `accumulator` object which is the result of running each of its own
                         * enumerable string keyed properties thru `iteratee`, with each invocation
                         * potentially mutating the `accumulator` object. If `accumulator` is not
                         * provided, a new object with the same `[[Prototype]]` will be used. The
                         * iteratee is invoked with four arguments: (accumulator, value, key, object).
                         * Iteratee functions may exit iteration early by explicitly returning `false`.
                         *
                         * @static
                         * @memberOf _
                         * @since 1.3.0
                         * @category Object
                         * @param {Object} object The object to iterate over.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @param {*} [accumulator] The custom accumulator value.
                         * @returns {*} Returns the accumulated value.
                         * @example
                         *
                         * _.transform([2, 3, 4], function(result, n) {
                         *   result.push(n *= n);
                         *   return n % 2 == 0;
                         * }, []);
                         * // => [4, 9]
                         *
                         * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
                         *   (result[value] || (result[value] = [])).push(key);
                         * }, {});
                         * // => { '1': ['a', 'c'], '2': ['b'] }
                         */
                        function transform(object, iteratee, accumulator) {
                            var isArr = isArray(object),
                                isArrLike = isArr || isBuffer(object) || isTypedArray(object);

                            iteratee = getIteratee(iteratee, 4);
                            if (accumulator == null) {
                                var Ctor = object && object.constructor;
                                if (isArrLike) {
                                    accumulator = isArr ? new Ctor : [];
                                } else if (isObject(object)) {
                                    accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
                                } else {
                                    accumulator = {};
                                }
                            }
                            (isArrLike ? arrayEach : baseForOwn)(object, function (value, index, object) {
                                return iteratee(accumulator, value, index, object);
                            });
                            return accumulator;
                        }

                        /**
                         * Removes the property at `path` of `object`.
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Object
                         * @param {Object} object The object to modify.
                         * @param {Array|string} path The path of the property to unset.
                         * @returns {boolean} Returns `true` if the property is deleted, else `false`.
                         * @example
                         *
                         * var object = { 'a': [{ 'b': { 'c': 7 } }] };
                         * _.unset(object, 'a[0].b.c');
                         * // => true
                         *
                         * console.log(object);
                         * // => { 'a': [{ 'b': {} }] };
                         *
                         * _.unset(object, ['a', '0', 'b', 'c']);
                         * // => true
                         *
                         * console.log(object);
                         * // => { 'a': [{ 'b': {} }] };
                         */
                        function unset(object, path) {
                            return object == null ? true : baseUnset(object, path);
                        }

                        /**
                         * This method is like `_.set` except that accepts `updater` to produce the
                         * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
                         * is invoked with one argument: (value).
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.6.0
                         * @category Object
                         * @param {Object} object The object to modify.
                         * @param {Array|string} path The path of the property to set.
                         * @param {Function} updater The function to produce the updated value.
                         * @returns {Object} Returns `object`.
                         * @example
                         *
                         * var object = { 'a': [{ 'b': { 'c': 3 } }] };
                         *
                         * _.update(object, 'a[0].b.c', function(n) { return n * n; });
                         * console.log(object.a[0].b.c);
                         * // => 9
                         *
                         * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
                         * console.log(object.x[0].y.z);
                         * // => 0
                         */
                        function update(object, path, updater) {
                            return object == null ? object : baseUpdate(object, path, castFunction(updater));
                        }

                        /**
                         * This method is like `_.update` except that it accepts `customizer` which is
                         * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
                         * path creation is handled by the method instead. The `customizer` is invoked
                         * with three arguments: (nsValue, key, nsObject).
                         *
                         * **Note:** This method mutates `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.6.0
                         * @category Object
                         * @param {Object} object The object to modify.
                         * @param {Array|string} path The path of the property to set.
                         * @param {Function} updater The function to produce the updated value.
                         * @param {Function} [customizer] The function to customize assigned values.
                         * @returns {Object} Returns `object`.
                         * @example
                         *
                         * var object = {};
                         *
                         * _.updateWith(object, '[0][1]', _.constant('a'), Object);
                         * // => { '0': { '1': 'a' } }
                         */
                        function updateWith(object, path, updater, customizer) {
                            customizer = typeof customizer == 'function' ? customizer : undefined;
                            return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
                        }

                        /**
                         * Creates an array of the own enumerable string keyed property values of `object`.
                         *
                         * **Note:** Non-object values are coerced to objects.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Object
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of property values.
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.values(new Foo);
                         * // => [1, 2] (iteration order is not guaranteed)
                         *
                         * _.values('hi');
                         * // => ['h', 'i']
                         */
                        function values(object) {
                            return object == null ? [] : baseValues(object, keys(object));
                        }

                        /**
                         * Creates an array of the own and inherited enumerable string keyed property
                         * values of `object`.
                         *
                         * **Note:** Non-object values are coerced to objects.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Object
                         * @param {Object} object The object to query.
                         * @returns {Array} Returns the array of property values.
                         * @example
                         *
                         * function Foo() {
                         *   this.a = 1;
                         *   this.b = 2;
                         * }
                         *
                         * Foo.prototype.c = 3;
                         *
                         * _.valuesIn(new Foo);
                         * // => [1, 2, 3] (iteration order is not guaranteed)
                         */
                        function valuesIn(object) {
                            return object == null ? [] : baseValues(object, keysIn(object));
                        }

                        /*------------------------------------------------------------------------*/

                        /**
                         * Clamps `number` within the inclusive `lower` and `upper` bounds.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Number
                         * @param {number} number The number to clamp.
                         * @param {number} [lower] The lower bound.
                         * @param {number} upper The upper bound.
                         * @returns {number} Returns the clamped number.
                         * @example
                         *
                         * _.clamp(-10, -5, 5);
                         * // => -5
                         *
                         * _.clamp(10, -5, 5);
                         * // => 5
                         */
                        function clamp(number, lower, upper) {
                            if (upper === undefined) {
                                upper = lower;
                                lower = undefined;
                            }
                            if (upper !== undefined) {
                                upper = toNumber(upper);
                                upper = upper === upper ? upper : 0;
                            }
                            if (lower !== undefined) {
                                lower = toNumber(lower);
                                lower = lower === lower ? lower : 0;
                            }
                            return baseClamp(toNumber(number), lower, upper);
                        }

                        /**
                         * Checks if `n` is between `start` and up to, but not including, `end`. If
                         * `end` is not specified, it's set to `start` with `start` then set to `0`.
                         * If `start` is greater than `end` the params are swapped to support
                         * negative ranges.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.3.0
                         * @category Number
                         * @param {number} number The number to check.
                         * @param {number} [start=0] The start of the range.
                         * @param {number} end The end of the range.
                         * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
                         * @see _.range, _.rangeRight
                         * @example
                         *
                         * _.inRange(3, 2, 4);
                         * // => true
                         *
                         * _.inRange(4, 8);
                         * // => true
                         *
                         * _.inRange(4, 2);
                         * // => false
                         *
                         * _.inRange(2, 2);
                         * // => false
                         *
                         * _.inRange(1.2, 2);
                         * // => true
                         *
                         * _.inRange(5.2, 4);
                         * // => false
                         *
                         * _.inRange(-3, -2, -6);
                         * // => true
                         */
                        function inRange(number, start, end) {
                            start = toFinite(start);
                            if (end === undefined) {
                                end = start;
                                start = 0;
                            } else {
                                end = toFinite(end);
                            }
                            number = toNumber(number);
                            return baseInRange(number, start, end);
                        }

                        /**
                         * Produces a random number between the inclusive `lower` and `upper` bounds.
                         * If only one argument is provided a number between `0` and the given number
                         * is returned. If `floating` is `true`, or either `lower` or `upper` are
                         * floats, a floating-point number is returned instead of an integer.
                         *
                         * **Note:** JavaScript follows the IEEE-754 standard for resolving
                         * floating-point values which can produce unexpected results.
                         *
                         * @static
                         * @memberOf _
                         * @since 0.7.0
                         * @category Number
                         * @param {number} [lower=0] The lower bound.
                         * @param {number} [upper=1] The upper bound.
                         * @param {boolean} [floating] Specify returning a floating-point number.
                         * @returns {number} Returns the random number.
                         * @example
                         *
                         * _.random(0, 5);
                         * // => an integer between 0 and 5
                         *
                         * _.random(5);
                         * // => also an integer between 0 and 5
                         *
                         * _.random(5, true);
                         * // => a floating-point number between 0 and 5
                         *
                         * _.random(1.2, 5.2);
                         * // => a floating-point number between 1.2 and 5.2
                         */
                        function random(lower, upper, floating) {
                            if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
                                upper = floating = undefined;
                            }
                            if (floating === undefined) {
                                if (typeof upper == 'boolean') {
                                    floating = upper;
                                    upper = undefined;
                                } else if (typeof lower == 'boolean') {
                                    floating = lower;
                                    lower = undefined;
                                }
                            }
                            if (lower === undefined && upper === undefined) {
                                lower = 0;
                                upper = 1;
                            } else {
                                lower = toFinite(lower);
                                if (upper === undefined) {
                                    upper = lower;
                                    lower = 0;
                                } else {
                                    upper = toFinite(upper);
                                }
                            }
                            if (lower > upper) {
                                var temp = lower;
                                lower = upper;
                                upper = temp;
                            }
                            if (floating || lower % 1 || upper % 1) {
                                var rand = nativeRandom();
                                return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);
                            }
                            return baseRandom(lower, upper);
                        }

                        /*------------------------------------------------------------------------*/

                        /**
                         * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the camel cased string.
                         * @example
                         *
                         * _.camelCase('Foo Bar');
                         * // => 'fooBar'
                         *
                         * _.camelCase('--foo-bar--');
                         * // => 'fooBar'
                         *
                         * _.camelCase('__FOO_BAR__');
                         * // => 'fooBar'
                         */
                        var camelCase = createCompounder(function (result, word, index) {
                            word = word.toLowerCase();
                            return result + (index ? capitalize(word) : word);
                        });

                        /**
                         * Converts the first character of `string` to upper case and the remaining
                         * to lower case.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to capitalize.
                         * @returns {string} Returns the capitalized string.
                         * @example
                         *
                         * _.capitalize('FRED');
                         * // => 'Fred'
                         */
                        function capitalize(string) {
                            return upperFirst(toString(string).toLowerCase());
                        }

                        /**
                         * Deburrs `string` by converting
                         * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
                         * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
                         * letters to basic Latin letters and removing
                         * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to deburr.
                         * @returns {string} Returns the deburred string.
                         * @example
                         *
                         * _.deburr('déjà vu');
                         * // => 'deja vu'
                         */
                        function deburr(string) {
                            string = toString(string);
                            return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
                        }

                        /**
                         * Checks if `string` ends with the given target string.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to inspect.
                         * @param {string} [target] The string to search for.
                         * @param {number} [position=string.length] The position to search up to.
                         * @returns {boolean} Returns `true` if `string` ends with `target`,
                         *  else `false`.
                         * @example
                         *
                         * _.endsWith('abc', 'c');
                         * // => true
                         *
                         * _.endsWith('abc', 'b');
                         * // => false
                         *
                         * _.endsWith('abc', 'b', 2);
                         * // => true
                         */
                        function endsWith(string, target, position) {
                            string = toString(string);
                            target = baseToString(target);

                            var length = string.length;
                            position = position === undefined
                                ? length
                                : baseClamp(toInteger(position), 0, length);

                            var end = position;
                            position -= target.length;
                            return position >= 0 && string.slice(position, end) == target;
                        }

                        /**
                         * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
                         * corresponding HTML entities.
                         *
                         * **Note:** No other characters are escaped. To escape additional
                         * characters use a third-party library like [_he_](https://mths.be/he).
                         *
                         * Though the ">" character is escaped for symmetry, characters like
                         * ">" and "/" don't need escaping in HTML and have no special meaning
                         * unless they're part of a tag or unquoted attribute value. See
                         * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
                         * (under "semi-related fun fact") for more details.
                         *
                         * When working with HTML you should always
                         * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
                         * XSS vectors.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category String
                         * @param {string} [string=''] The string to escape.
                         * @returns {string} Returns the escaped string.
                         * @example
                         *
                         * _.escape('fred, barney, & pebbles');
                         * // => 'fred, barney, &amp; pebbles'
                         */
                        function escape(string) {
                            string = toString(string);
                            return (string && reHasUnescapedHtml.test(string))
                                ? string.replace(reUnescapedHtml, escapeHtmlChar)
                                : string;
                        }

                        /**
                         * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
                         * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to escape.
                         * @returns {string} Returns the escaped string.
                         * @example
                         *
                         * _.escapeRegExp('[lodash](https://lodash.com/)');
                         * // => '\[lodash\]\(https://lodash\.com/\)'
                         */
                        function escapeRegExp(string) {
                            string = toString(string);
                            return (string && reHasRegExpChar.test(string))
                                ? string.replace(reRegExpChar, '\\$&')
                                : string;
                        }

                        /**
                         * Converts `string` to
                         * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the kebab cased string.
                         * @example
                         *
                         * _.kebabCase('Foo Bar');
                         * // => 'foo-bar'
                         *
                         * _.kebabCase('fooBar');
                         * // => 'foo-bar'
                         *
                         * _.kebabCase('__FOO_BAR__');
                         * // => 'foo-bar'
                         */
                        var kebabCase = createCompounder(function (result, word, index) {
                            return result + (index ? '-' : '') + word.toLowerCase();
                        });

                        /**
                         * Converts `string`, as space separated words, to lower case.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the lower cased string.
                         * @example
                         *
                         * _.lowerCase('--Foo-Bar--');
                         * // => 'foo bar'
                         *
                         * _.lowerCase('fooBar');
                         * // => 'foo bar'
                         *
                         * _.lowerCase('__FOO_BAR__');
                         * // => 'foo bar'
                         */
                        var lowerCase = createCompounder(function (result, word, index) {
                            return result + (index ? ' ' : '') + word.toLowerCase();
                        });

                        /**
                         * Converts the first character of `string` to lower case.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the converted string.
                         * @example
                         *
                         * _.lowerFirst('Fred');
                         * // => 'fred'
                         *
                         * _.lowerFirst('FRED');
                         * // => 'fRED'
                         */
                        var lowerFirst = createCaseFirst('toLowerCase');

                        /**
                         * Pads `string` on the left and right sides if it's shorter than `length`.
                         * Padding characters are truncated if they can't be evenly divided by `length`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to pad.
                         * @param {number} [length=0] The padding length.
                         * @param {string} [chars=' '] The string used as padding.
                         * @returns {string} Returns the padded string.
                         * @example
                         *
                         * _.pad('abc', 8);
                         * // => '  abc   '
                         *
                         * _.pad('abc', 8, '_-');
                         * // => '_-abc_-_'
                         *
                         * _.pad('abc', 3);
                         * // => 'abc'
                         */
                        function pad(string, length, chars) {
                            string = toString(string);
                            length = toInteger(length);

                            var strLength = length ? stringSize(string) : 0;
                            if (!length || strLength >= length) {
                                return string;
                            }
                            var mid = (length - strLength) / 2;
                            return (
                                createPadding(nativeFloor(mid), chars) +
                                string +
                                createPadding(nativeCeil(mid), chars)
                            );
                        }

                        /**
                         * Pads `string` on the right side if it's shorter than `length`. Padding
                         * characters are truncated if they exceed `length`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to pad.
                         * @param {number} [length=0] The padding length.
                         * @param {string} [chars=' '] The string used as padding.
                         * @returns {string} Returns the padded string.
                         * @example
                         *
                         * _.padEnd('abc', 6);
                         * // => 'abc   '
                         *
                         * _.padEnd('abc', 6, '_-');
                         * // => 'abc_-_'
                         *
                         * _.padEnd('abc', 3);
                         * // => 'abc'
                         */
                        function padEnd(string, length, chars) {
                            string = toString(string);
                            length = toInteger(length);

                            var strLength = length ? stringSize(string) : 0;
                            return (length && strLength < length)
                                ? (string + createPadding(length - strLength, chars))
                                : string;
                        }

                        /**
                         * Pads `string` on the left side if it's shorter than `length`. Padding
                         * characters are truncated if they exceed `length`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to pad.
                         * @param {number} [length=0] The padding length.
                         * @param {string} [chars=' '] The string used as padding.
                         * @returns {string} Returns the padded string.
                         * @example
                         *
                         * _.padStart('abc', 6);
                         * // => '   abc'
                         *
                         * _.padStart('abc', 6, '_-');
                         * // => '_-_abc'
                         *
                         * _.padStart('abc', 3);
                         * // => 'abc'
                         */
                        function padStart(string, length, chars) {
                            string = toString(string);
                            length = toInteger(length);

                            var strLength = length ? stringSize(string) : 0;
                            return (length && strLength < length)
                                ? (createPadding(length - strLength, chars) + string)
                                : string;
                        }

                        /**
                         * Converts `string` to an integer of the specified radix. If `radix` is
                         * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
                         * hexadecimal, in which case a `radix` of `16` is used.
                         *
                         * **Note:** This method aligns with the
                         * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
                         *
                         * @static
                         * @memberOf _
                         * @since 1.1.0
                         * @category String
                         * @param {string} string The string to convert.
                         * @param {number} [radix=10] The radix to interpret `value` by.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {number} Returns the converted integer.
                         * @example
                         *
                         * _.parseInt('08');
                         * // => 8
                         *
                         * _.map(['6', '08', '10'], _.parseInt);
                         * // => [6, 8, 10]
                         */
                        function parseInt(string, radix, guard) {
                            if (guard || radix == null) {
                                radix = 0;
                            } else if (radix) {
                                radix = +radix;
                            }
                            return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
                        }

                        /**
                         * Repeats the given string `n` times.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to repeat.
                         * @param {number} [n=1] The number of times to repeat the string.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {string} Returns the repeated string.
                         * @example
                         *
                         * _.repeat('*', 3);
                         * // => '***'
                         *
                         * _.repeat('abc', 2);
                         * // => 'abcabc'
                         *
                         * _.repeat('abc', 0);
                         * // => ''
                         */
                        function repeat(string, n, guard) {
                            if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {
                                n = 1;
                            } else {
                                n = toInteger(n);
                            }
                            return baseRepeat(toString(string), n);
                        }

                        /**
                         * Replaces matches for `pattern` in `string` with `replacement`.
                         *
                         * **Note:** This method is based on
                         * [`String#replace`](https://mdn.io/String/replace).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to modify.
                         * @param {RegExp|string} pattern The pattern to replace.
                         * @param {Function|string} replacement The match replacement.
                         * @returns {string} Returns the modified string.
                         * @example
                         *
                         * _.replace('Hi Fred', 'Fred', 'Barney');
                         * // => 'Hi Barney'
                         */
                        function replace() {
                            var args = arguments,
                                string = toString(args[0]);

                            return args.length < 3 ? string : string.replace(args[1], args[2]);
                        }

                        /**
                         * Converts `string` to
                         * [snake case](https://en.wikipedia.org/wiki/Snake_case).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the snake cased string.
                         * @example
                         *
                         * _.snakeCase('Foo Bar');
                         * // => 'foo_bar'
                         *
                         * _.snakeCase('fooBar');
                         * // => 'foo_bar'
                         *
                         * _.snakeCase('--FOO-BAR--');
                         * // => 'foo_bar'
                         */
                        var snakeCase = createCompounder(function (result, word, index) {
                            return result + (index ? '_' : '') + word.toLowerCase();
                        });

                        /**
                         * Splits `string` by `separator`.
                         *
                         * **Note:** This method is based on
                         * [`String#split`](https://mdn.io/String/split).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to split.
                         * @param {RegExp|string} separator The separator pattern to split by.
                         * @param {number} [limit] The length to truncate results to.
                         * @returns {Array} Returns the string segments.
                         * @example
                         *
                         * _.split('a-b-c', '-', 2);
                         * // => ['a', 'b']
                         */
                        function split(string, separator, limit) {
                            if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
                                separator = limit = undefined;
                            }
                            limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
                            if (!limit) {
                                return [];
                            }
                            string = toString(string);
                            if (string && (
                                typeof separator == 'string' ||
                                (separator != null && !isRegExp(separator))
                            )) {
                                separator = baseToString(separator);
                                if (!separator && hasUnicode(string)) {
                                    return castSlice(stringToArray(string), 0, limit);
                                }
                            }
                            return string.split(separator, limit);
                        }

                        /**
                         * Converts `string` to
                         * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
                         *
                         * @static
                         * @memberOf _
                         * @since 3.1.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the start cased string.
                         * @example
                         *
                         * _.startCase('--foo-bar--');
                         * // => 'Foo Bar'
                         *
                         * _.startCase('fooBar');
                         * // => 'Foo Bar'
                         *
                         * _.startCase('__FOO_BAR__');
                         * // => 'FOO BAR'
                         */
                        var startCase = createCompounder(function (result, word, index) {
                            return result + (index ? ' ' : '') + upperFirst(word);
                        });

                        /**
                         * Checks if `string` starts with the given target string.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to inspect.
                         * @param {string} [target] The string to search for.
                         * @param {number} [position=0] The position to search from.
                         * @returns {boolean} Returns `true` if `string` starts with `target`,
                         *  else `false`.
                         * @example
                         *
                         * _.startsWith('abc', 'a');
                         * // => true
                         *
                         * _.startsWith('abc', 'b');
                         * // => false
                         *
                         * _.startsWith('abc', 'b', 1);
                         * // => true
                         */
                        function startsWith(string, target, position) {
                            string = toString(string);
                            position = position == null
                                ? 0
                                : baseClamp(toInteger(position), 0, string.length);

                            target = baseToString(target);
                            return string.slice(position, position + target.length) == target;
                        }

                        /**
                         * Creates a compiled template function that can interpolate data properties
                         * in "interpolate" delimiters, HTML-escape interpolated data properties in
                         * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
                         * properties may be accessed as free variables in the template. If a setting
                         * object is given, it takes precedence over `_.templateSettings` values.
                         *
                         * **Note:** In the development build `_.template` utilizes
                         * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
                         * for easier debugging.
                         *
                         * For more information on precompiling templates see
                         * [lodash's custom builds documentation](https://lodash.com/custom-builds).
                         *
                         * For more information on Chrome extension sandboxes see
                         * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category String
                         * @param {string} [string=''] The template string.
                         * @param {Object} [options={}] The options object.
                         * @param {RegExp} [options.escape=_.templateSettings.escape]
                         *  The HTML "escape" delimiter.
                         * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
                         *  The "evaluate" delimiter.
                         * @param {Object} [options.imports=_.templateSettings.imports]
                         *  An object to import into the template as free variables.
                         * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
                         *  The "interpolate" delimiter.
                         * @param {string} [options.sourceURL='lodash.templateSources[n]']
                         *  The sourceURL of the compiled template.
                         * @param {string} [options.variable='obj']
                         *  The data object variable name.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Function} Returns the compiled template function.
                         * @example
                         *
                         * // Use the "interpolate" delimiter to create a compiled template.
                         * var compiled = _.template('hello <%= user %>!');
                         * compiled({ 'user': 'fred' });
                         * // => 'hello fred!'
                         *
                         * // Use the HTML "escape" delimiter to escape data property values.
                         * var compiled = _.template('<b><%- value %></b>');
                         * compiled({ 'value': '<script>' });
                         * // => '<b>&lt;script&gt;</b>'
                         *
                         * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
                         * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
                         * compiled({ 'users': ['fred', 'barney'] });
                         * // => '<li>fred</li><li>barney</li>'
                         *
                         * // Use the internal `print` function in "evaluate" delimiters.
                         * var compiled = _.template('<% print("hello " + user); %>!');
                         * compiled({ 'user': 'barney' });
                         * // => 'hello barney!'
                         *
                         * // Use the ES template literal delimiter as an "interpolate" delimiter.
                         * // Disable support by replacing the "interpolate" delimiter.
                         * var compiled = _.template('hello ${ user }!');
                         * compiled({ 'user': 'pebbles' });
                         * // => 'hello pebbles!'
                         *
                         * // Use backslashes to treat delimiters as plain text.
                         * var compiled = _.template('<%= "\\<%- value %\\>" %>');
                         * compiled({ 'value': 'ignored' });
                         * // => '<%- value %>'
                         *
                         * // Use the `imports` option to import `jQuery` as `jq`.
                         * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
                         * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
                         * compiled({ 'users': ['fred', 'barney'] });
                         * // => '<li>fred</li><li>barney</li>'
                         *
                         * // Use the `sourceURL` option to specify a custom sourceURL for the template.
                         * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
                         * compiled(data);
                         * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
                         *
                         * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
                         * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
                         * compiled.source;
                         * // => function(data) {
                         * //   var __t, __p = '';
                         * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
                         * //   return __p;
                         * // }
                         *
                         * // Use custom template delimiters.
                         * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
                         * var compiled = _.template('hello {{ user }}!');
                         * compiled({ 'user': 'mustache' });
                         * // => 'hello mustache!'
                         *
                         * // Use the `source` property to inline compiled templates for meaningful
                         * // line numbers in error messages and stack traces.
                         * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
                         *   var JST = {\
                         *     "main": ' + _.template(mainText).source + '\
                         *   };\
                         * ');
                         */
                        function template(string, options, guard) {
                            // Based on John Resig's `tmpl` implementation
                            // (http://ejohn.org/blog/javascript-micro-templating/)
                            // and Laura Doktorova's doT.js (https://github.com/olado/doT).
                            var settings = lodash.templateSettings;

                            if (guard && isIterateeCall(string, options, guard)) {
                                options = undefined;
                            }
                            string = toString(string);
                            options = assignInWith({}, options, settings, customDefaultsAssignIn);

                            var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
                                importsKeys = keys(imports),
                                importsValues = baseValues(imports, importsKeys);

                            var isEscaping,
                                isEvaluating,
                                index = 0,
                                interpolate = options.interpolate || reNoMatch,
                                source = "__p += '";

                            // Compile the regexp to match each delimiter.
                            var reDelimiters = RegExp(
                                (options.escape || reNoMatch).source + '|' +
                                interpolate.source + '|' +
                                (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
                                (options.evaluate || reNoMatch).source + '|$'
                                , 'g');

                            // Use a sourceURL for easier debugging.
                            // The sourceURL gets injected into the source that's eval-ed, so be careful
                            // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in
                            // and escape the comment, thus injecting code that gets evaled.
                            var sourceURL = '//# sourceURL=' +
                                (hasOwnProperty.call(options, 'sourceURL')
                                        ? (options.sourceURL + '').replace(/\s/g, ' ')
                                        : ('lodash.templateSources[' + (++templateCounter) + ']')
                                ) + '\n';

                            string.replace(reDelimiters, function (match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
                                interpolateValue || (interpolateValue = esTemplateValue);

                                // Escape characters that can't be included in string literals.
                                source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);

                                // Replace delimiters with snippets.
                                if (escapeValue) {
                                    isEscaping = true;
                                    source += "' +\n__e(" + escapeValue + ") +\n'";
                                }
                                if (evaluateValue) {
                                    isEvaluating = true;
                                    source += "';\n" + evaluateValue + ";\n__p += '";
                                }
                                if (interpolateValue) {
                                    source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
                                }
                                index = offset + match.length;

                                // The JS engine embedded in Adobe products needs `match` returned in
                                // order to produce the correct `offset` value.
                                return match;
                            });

                            source += "';\n";

                            // If `variable` is not specified wrap a with-statement around the generated
                            // code to add the data object to the top of the scope chain.
                            var variable = hasOwnProperty.call(options, 'variable') && options.variable;
                            if (!variable) {
                                source = 'with (obj) {\n' + source + '\n}\n';
                            }
                                // Throw an error if a forbidden character was found in `variable`, to prevent
                            // potential command injection attacks.
                            else if (reForbiddenIdentifierChars.test(variable)) {
                                throw new Error(INVALID_TEMPL_VAR_ERROR_TEXT);
                            }

                            // Cleanup code by stripping empty strings.
                            source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
                                .replace(reEmptyStringMiddle, '$1')
                                .replace(reEmptyStringTrailing, '$1;');

                            // Frame code as the function body.
                            source = 'function(' + (variable || 'obj') + ') {\n' +
                                (variable
                                        ? ''
                                        : 'obj || (obj = {});\n'
                                ) +
                                "var __t, __p = ''" +
                                (isEscaping
                                        ? ', __e = _.escape'
                                        : ''
                                ) +
                                (isEvaluating
                                        ? ', __j = Array.prototype.join;\n' +
                                        "function print() { __p += __j.call(arguments, '') }\n"
                                        : ';\n'
                                ) +
                                source +
                                'return __p\n}';

                            var result = attempt(function () {
                                return Function(importsKeys, sourceURL + 'return ' + source)
                                    .apply(undefined, importsValues);
                            });

                            // Provide the compiled function's source by its `toString` method or
                            // the `source` property as a convenience for inlining compiled templates.
                            result.source = source;
                            if (isError(result)) {
                                throw result;
                            }
                            return result;
                        }

                        /**
                         * Converts `string`, as a whole, to lower case just like
                         * [String#toLowerCase](https://mdn.io/toLowerCase).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the lower cased string.
                         * @example
                         *
                         * _.toLower('--Foo-Bar--');
                         * // => '--foo-bar--'
                         *
                         * _.toLower('fooBar');
                         * // => 'foobar'
                         *
                         * _.toLower('__FOO_BAR__');
                         * // => '__foo_bar__'
                         */
                        function toLower(value) {
                            return toString(value).toLowerCase();
                        }

                        /**
                         * Converts `string`, as a whole, to upper case just like
                         * [String#toUpperCase](https://mdn.io/toUpperCase).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the upper cased string.
                         * @example
                         *
                         * _.toUpper('--foo-bar--');
                         * // => '--FOO-BAR--'
                         *
                         * _.toUpper('fooBar');
                         * // => 'FOOBAR'
                         *
                         * _.toUpper('__foo_bar__');
                         * // => '__FOO_BAR__'
                         */
                        function toUpper(value) {
                            return toString(value).toUpperCase();
                        }

                        /**
                         * Removes leading and trailing whitespace or specified characters from `string`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to trim.
                         * @param {string} [chars=whitespace] The characters to trim.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {string} Returns the trimmed string.
                         * @example
                         *
                         * _.trim('  abc  ');
                         * // => 'abc'
                         *
                         * _.trim('-_-abc-_-', '_-');
                         * // => 'abc'
                         *
                         * _.map(['  foo  ', '  bar  '], _.trim);
                         * // => ['foo', 'bar']
                         */
                        function trim(string, chars, guard) {
                            string = toString(string);
                            if (string && (guard || chars === undefined)) {
                                return baseTrim(string);
                            }
                            if (!string || !(chars = baseToString(chars))) {
                                return string;
                            }
                            var strSymbols = stringToArray(string),
                                chrSymbols = stringToArray(chars),
                                start = charsStartIndex(strSymbols, chrSymbols),
                                end = charsEndIndex(strSymbols, chrSymbols) + 1;

                            return castSlice(strSymbols, start, end).join('');
                        }

                        /**
                         * Removes trailing whitespace or specified characters from `string`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to trim.
                         * @param {string} [chars=whitespace] The characters to trim.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {string} Returns the trimmed string.
                         * @example
                         *
                         * _.trimEnd('  abc  ');
                         * // => '  abc'
                         *
                         * _.trimEnd('-_-abc-_-', '_-');
                         * // => '-_-abc'
                         */
                        function trimEnd(string, chars, guard) {
                            string = toString(string);
                            if (string && (guard || chars === undefined)) {
                                return string.slice(0, trimmedEndIndex(string) + 1);
                            }
                            if (!string || !(chars = baseToString(chars))) {
                                return string;
                            }
                            var strSymbols = stringToArray(string),
                                end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;

                            return castSlice(strSymbols, 0, end).join('');
                        }

                        /**
                         * Removes leading whitespace or specified characters from `string`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to trim.
                         * @param {string} [chars=whitespace] The characters to trim.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {string} Returns the trimmed string.
                         * @example
                         *
                         * _.trimStart('  abc  ');
                         * // => 'abc  '
                         *
                         * _.trimStart('-_-abc-_-', '_-');
                         * // => 'abc-_-'
                         */
                        function trimStart(string, chars, guard) {
                            string = toString(string);
                            if (string && (guard || chars === undefined)) {
                                return string.replace(reTrimStart, '');
                            }
                            if (!string || !(chars = baseToString(chars))) {
                                return string;
                            }
                            var strSymbols = stringToArray(string),
                                start = charsStartIndex(strSymbols, stringToArray(chars));

                            return castSlice(strSymbols, start).join('');
                        }

                        /**
                         * Truncates `string` if it's longer than the given maximum string length.
                         * The last characters of the truncated string are replaced with the omission
                         * string which defaults to "...".
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to truncate.
                         * @param {Object} [options={}] The options object.
                         * @param {number} [options.length=30] The maximum string length.
                         * @param {string} [options.omission='...'] The string to indicate text is omitted.
                         * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
                         * @returns {string} Returns the truncated string.
                         * @example
                         *
                         * _.truncate('hi-diddly-ho there, neighborino');
                         * // => 'hi-diddly-ho there, neighbo...'
                         *
                         * _.truncate('hi-diddly-ho there, neighborino', {
                         *   'length': 24,
                         *   'separator': ' '
                         * });
                         * // => 'hi-diddly-ho there,...'
                         *
                         * _.truncate('hi-diddly-ho there, neighborino', {
                         *   'length': 24,
                         *   'separator': /,? +/
                         * });
                         * // => 'hi-diddly-ho there...'
                         *
                         * _.truncate('hi-diddly-ho there, neighborino', {
                         *   'omission': ' [...]'
                         * });
                         * // => 'hi-diddly-ho there, neig [...]'
                         */
                        function truncate(string, options) {
                            var length = DEFAULT_TRUNC_LENGTH,
                                omission = DEFAULT_TRUNC_OMISSION;

                            if (isObject(options)) {
                                var separator = 'separator' in options ? options.separator : separator;
                                length = 'length' in options ? toInteger(options.length) : length;
                                omission = 'omission' in options ? baseToString(options.omission) : omission;
                            }
                            string = toString(string);

                            var strLength = string.length;
                            if (hasUnicode(string)) {
                                var strSymbols = stringToArray(string);
                                strLength = strSymbols.length;
                            }
                            if (length >= strLength) {
                                return string;
                            }
                            var end = length - stringSize(omission);
                            if (end < 1) {
                                return omission;
                            }
                            var result = strSymbols
                                ? castSlice(strSymbols, 0, end).join('')
                                : string.slice(0, end);

                            if (separator === undefined) {
                                return result + omission;
                            }
                            if (strSymbols) {
                                end += (result.length - end);
                            }
                            if (isRegExp(separator)) {
                                if (string.slice(end).search(separator)) {
                                    var match,
                                        substring = result;

                                    if (!separator.global) {
                                        separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
                                    }
                                    separator.lastIndex = 0;
                                    while ((match = separator.exec(substring))) {
                                        var newEnd = match.index;
                                    }
                                    result = result.slice(0, newEnd === undefined ? end : newEnd);
                                }
                            } else if (string.indexOf(baseToString(separator), end) != end) {
                                var index = result.lastIndexOf(separator);
                                if (index > -1) {
                                    result = result.slice(0, index);
                                }
                            }
                            return result + omission;
                        }

                        /**
                         * The inverse of `_.escape`; this method converts the HTML entities
                         * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
                         * their corresponding characters.
                         *
                         * **Note:** No other HTML entities are unescaped. To unescape additional
                         * HTML entities use a third-party library like [_he_](https://mths.be/he).
                         *
                         * @static
                         * @memberOf _
                         * @since 0.6.0
                         * @category String
                         * @param {string} [string=''] The string to unescape.
                         * @returns {string} Returns the unescaped string.
                         * @example
                         *
                         * _.unescape('fred, barney, &amp; pebbles');
                         * // => 'fred, barney, & pebbles'
                         */
                        function unescape(string) {
                            string = toString(string);
                            return (string && reHasEscapedHtml.test(string))
                                ? string.replace(reEscapedHtml, unescapeHtmlChar)
                                : string;
                        }

                        /**
                         * Converts `string`, as space separated words, to upper case.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the upper cased string.
                         * @example
                         *
                         * _.upperCase('--foo-bar');
                         * // => 'FOO BAR'
                         *
                         * _.upperCase('fooBar');
                         * // => 'FOO BAR'
                         *
                         * _.upperCase('__foo_bar__');
                         * // => 'FOO BAR'
                         */
                        var upperCase = createCompounder(function (result, word, index) {
                            return result + (index ? ' ' : '') + word.toUpperCase();
                        });

                        /**
                         * Converts the first character of `string` to upper case.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category String
                         * @param {string} [string=''] The string to convert.
                         * @returns {string} Returns the converted string.
                         * @example
                         *
                         * _.upperFirst('fred');
                         * // => 'Fred'
                         *
                         * _.upperFirst('FRED');
                         * // => 'FRED'
                         */
                        var upperFirst = createCaseFirst('toUpperCase');

                        /**
                         * Splits `string` into an array of its words.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category String
                         * @param {string} [string=''] The string to inspect.
                         * @param {RegExp|string} [pattern] The pattern to match words.
                         * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
                         * @returns {Array} Returns the words of `string`.
                         * @example
                         *
                         * _.words('fred, barney, & pebbles');
                         * // => ['fred', 'barney', 'pebbles']
                         *
                         * _.words('fred, barney, & pebbles', /[^, ]+/g);
                         * // => ['fred', 'barney', '&', 'pebbles']
                         */
                        function words(string, pattern, guard) {
                            string = toString(string);
                            pattern = guard ? undefined : pattern;

                            if (pattern === undefined) {
                                return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
                            }
                            return string.match(pattern) || [];
                        }

                        /*------------------------------------------------------------------------*/

                        /**
                         * Attempts to invoke `func`, returning either the result or the caught error
                         * object. Any additional arguments are provided to `func` when it's invoked.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Util
                         * @param {Function} func The function to attempt.
                         * @param {...*} [args] The arguments to invoke `func` with.
                         * @returns {*} Returns the `func` result or error object.
                         * @example
                         *
                         * // Avoid throwing errors for invalid selectors.
                         * var elements = _.attempt(function(selector) {
                         *   return document.querySelectorAll(selector);
                         * }, '>_>');
                         *
                         * if (_.isError(elements)) {
                         *   elements = [];
                         * }
                         */
                        var attempt = baseRest(function (func, args) {
                            try {
                                return apply(func, undefined, args);
                            } catch (e) {
                                return isError(e) ? e : new Error(e);
                            }
                        });

                        /**
                         * Binds methods of an object to the object itself, overwriting the existing
                         * method.
                         *
                         * **Note:** This method doesn't set the "length" property of bound functions.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Util
                         * @param {Object} object The object to bind and assign the bound methods to.
                         * @param {...(string|string[])} methodNames The object method names to bind.
                         * @returns {Object} Returns `object`.
                         * @example
                         *
                         * var view = {
                         *   'label': 'docs',
                         *   'click': function() {
                         *     console.log('clicked ' + this.label);
                         *   }
                         * };
                         *
                         * _.bindAll(view, ['click']);
                         * jQuery(element).on('click', view.click);
                         * // => Logs 'clicked docs' when clicked.
                         */
                        var bindAll = flatRest(function (object, methodNames) {
                            arrayEach(methodNames, function (key) {
                                key = toKey(key);
                                baseAssignValue(object, key, bind(object[key], object));
                            });
                            return object;
                        });

                        /**
                         * Creates a function that iterates over `pairs` and invokes the corresponding
                         * function of the first predicate to return truthy. The predicate-function
                         * pairs are invoked with the `this` binding and arguments of the created
                         * function.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Util
                         * @param {Array} pairs The predicate-function pairs.
                         * @returns {Function} Returns the new composite function.
                         * @example
                         *
                         * var func = _.cond([
                         *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
                         *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
                         *   [_.stubTrue,                      _.constant('no match')]
                         * ]);
                         *
                         * func({ 'a': 1, 'b': 2 });
                         * // => 'matches A'
                         *
                         * func({ 'a': 0, 'b': 1 });
                         * // => 'matches B'
                         *
                         * func({ 'a': '1', 'b': '2' });
                         * // => 'no match'
                         */
                        function cond(pairs) {
                            var length = pairs == null ? 0 : pairs.length,
                                toIteratee = getIteratee();

                            pairs = !length ? [] : arrayMap(pairs, function (pair) {
                                if (typeof pair[1] != 'function') {
                                    throw new TypeError(FUNC_ERROR_TEXT);
                                }
                                return [toIteratee(pair[0]), pair[1]];
                            });

                            return baseRest(function (args) {
                                var index = -1;
                                while (++index < length) {
                                    var pair = pairs[index];
                                    if (apply(pair[0], this, args)) {
                                        return apply(pair[1], this, args);
                                    }
                                }
                            });
                        }

                        /**
                         * Creates a function that invokes the predicate properties of `source` with
                         * the corresponding property values of a given object, returning `true` if
                         * all predicates return truthy, else `false`.
                         *
                         * **Note:** The created function is equivalent to `_.conformsTo` with
                         * `source` partially applied.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Util
                         * @param {Object} source The object of property predicates to conform to.
                         * @returns {Function} Returns the new spec function.
                         * @example
                         *
                         * var objects = [
                         *   { 'a': 2, 'b': 1 },
                         *   { 'a': 1, 'b': 2 }
                         * ];
                         *
                         * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
                         * // => [{ 'a': 1, 'b': 2 }]
                         */
                        function conforms(source) {
                            return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
                        }

                        /**
                         * Creates a function that returns `value`.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.4.0
                         * @category Util
                         * @param {*} value The value to return from the new function.
                         * @returns {Function} Returns the new constant function.
                         * @example
                         *
                         * var objects = _.times(2, _.constant({ 'a': 1 }));
                         *
                         * console.log(objects);
                         * // => [{ 'a': 1 }, { 'a': 1 }]
                         *
                         * console.log(objects[0] === objects[1]);
                         * // => true
                         */
                        function constant(value) {
                            return function () {
                                return value;
                            };
                        }

                        /**
                         * Checks `value` to determine whether a default value should be returned in
                         * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
                         * or `undefined`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.14.0
                         * @category Util
                         * @param {*} value The value to check.
                         * @param {*} defaultValue The default value.
                         * @returns {*} Returns the resolved value.
                         * @example
                         *
                         * _.defaultTo(1, 10);
                         * // => 1
                         *
                         * _.defaultTo(undefined, 10);
                         * // => 10
                         */
                        function defaultTo(value, defaultValue) {
                            return (value == null || value !== value) ? defaultValue : value;
                        }

                        /**
                         * Creates a function that returns the result of invoking the given functions
                         * with the `this` binding of the created function, where each successive
                         * invocation is supplied the return value of the previous.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Util
                         * @param {...(Function|Function[])} [funcs] The functions to invoke.
                         * @returns {Function} Returns the new composite function.
                         * @see _.flowRight
                         * @example
                         *
                         * function square(n) {
                         *   return n * n;
                         * }
                         *
                         * var addSquare = _.flow([_.add, square]);
                         * addSquare(1, 2);
                         * // => 9
                         */
                        var flow = createFlow();

                        /**
                         * This method is like `_.flow` except that it creates a function that
                         * invokes the given functions from right to left.
                         *
                         * @static
                         * @since 3.0.0
                         * @memberOf _
                         * @category Util
                         * @param {...(Function|Function[])} [funcs] The functions to invoke.
                         * @returns {Function} Returns the new composite function.
                         * @see _.flow
                         * @example
                         *
                         * function square(n) {
                         *   return n * n;
                         * }
                         *
                         * var addSquare = _.flowRight([square, _.add]);
                         * addSquare(1, 2);
                         * // => 9
                         */
                        var flowRight = createFlow(true);

                        /**
                         * This method returns the first argument it receives.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Util
                         * @param {*} value Any value.
                         * @returns {*} Returns `value`.
                         * @example
                         *
                         * var object = { 'a': 1 };
                         *
                         * console.log(_.identity(object) === object);
                         * // => true
                         */
                        function identity(value) {
                            return value;
                        }

                        /**
                         * Creates a function that invokes `func` with the arguments of the created
                         * function. If `func` is a property name, the created function returns the
                         * property value for a given element. If `func` is an array or object, the
                         * created function returns `true` for elements that contain the equivalent
                         * source properties, otherwise it returns `false`.
                         *
                         * @static
                         * @since 4.0.0
                         * @memberOf _
                         * @category Util
                         * @param {*} [func=_.identity] The value to convert to a callback.
                         * @returns {Function} Returns the callback.
                         * @example
                         *
                         * var users = [
                         *   { 'user': 'barney', 'age': 36, 'active': true },
                         *   { 'user': 'fred',   'age': 40, 'active': false }
                         * ];
                         *
                         * // The `_.matches` iteratee shorthand.
                         * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
                         * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
                         *
                         * // The `_.matchesProperty` iteratee shorthand.
                         * _.filter(users, _.iteratee(['user', 'fred']));
                         * // => [{ 'user': 'fred', 'age': 40 }]
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.map(users, _.iteratee('user'));
                         * // => ['barney', 'fred']
                         *
                         * // Create custom iteratee shorthands.
                         * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
                         *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
                         *     return func.test(string);
                         *   };
                         * });
                         *
                         * _.filter(['abc', 'def'], /ef/);
                         * // => ['def']
                         */
                        function iteratee(func) {
                            return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
                        }

                        /**
                         * Creates a function that performs a partial deep comparison between a given
                         * object and `source`, returning `true` if the given object has equivalent
                         * property values, else `false`.
                         *
                         * **Note:** The created function is equivalent to `_.isMatch` with `source`
                         * partially applied.
                         *
                         * Partial comparisons will match empty array and empty object `source`
                         * values against any array or object value, respectively. See `_.isEqual`
                         * for a list of supported value comparisons.
                         *
                         * **Note:** Multiple values can be checked by combining several matchers
                         * using `_.overSome`
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Util
                         * @param {Object} source The object of property values to match.
                         * @returns {Function} Returns the new spec function.
                         * @example
                         *
                         * var objects = [
                         *   { 'a': 1, 'b': 2, 'c': 3 },
                         *   { 'a': 4, 'b': 5, 'c': 6 }
                         * ];
                         *
                         * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
                         * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
                         *
                         * // Checking for several possible values
                         * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));
                         * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
                         */
                        function matches(source) {
                            return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
                        }

                        /**
                         * Creates a function that performs a partial deep comparison between the
                         * value at `path` of a given object to `srcValue`, returning `true` if the
                         * object value is equivalent, else `false`.
                         *
                         * **Note:** Partial comparisons will match empty array and empty object
                         * `srcValue` values against any array or object value, respectively. See
                         * `_.isEqual` for a list of supported value comparisons.
                         *
                         * **Note:** Multiple values can be checked by combining several matchers
                         * using `_.overSome`
                         *
                         * @static
                         * @memberOf _
                         * @since 3.2.0
                         * @category Util
                         * @param {Array|string} path The path of the property to get.
                         * @param {*} srcValue The value to match.
                         * @returns {Function} Returns the new spec function.
                         * @example
                         *
                         * var objects = [
                         *   { 'a': 1, 'b': 2, 'c': 3 },
                         *   { 'a': 4, 'b': 5, 'c': 6 }
                         * ];
                         *
                         * _.find(objects, _.matchesProperty('a', 4));
                         * // => { 'a': 4, 'b': 5, 'c': 6 }
                         *
                         * // Checking for several possible values
                         * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));
                         * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
                         */
                        function matchesProperty(path, srcValue) {
                            return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
                        }

                        /**
                         * Creates a function that invokes the method at `path` of a given object.
                         * Any additional arguments are provided to the invoked method.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.7.0
                         * @category Util
                         * @param {Array|string} path The path of the method to invoke.
                         * @param {...*} [args] The arguments to invoke the method with.
                         * @returns {Function} Returns the new invoker function.
                         * @example
                         *
                         * var objects = [
                         *   { 'a': { 'b': _.constant(2) } },
                         *   { 'a': { 'b': _.constant(1) } }
                         * ];
                         *
                         * _.map(objects, _.method('a.b'));
                         * // => [2, 1]
                         *
                         * _.map(objects, _.method(['a', 'b']));
                         * // => [2, 1]
                         */
                        var method = baseRest(function (path, args) {
                            return function (object) {
                                return baseInvoke(object, path, args);
                            };
                        });

                        /**
                         * The opposite of `_.method`; this method creates a function that invokes
                         * the method at a given path of `object`. Any additional arguments are
                         * provided to the invoked method.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.7.0
                         * @category Util
                         * @param {Object} object The object to query.
                         * @param {...*} [args] The arguments to invoke the method with.
                         * @returns {Function} Returns the new invoker function.
                         * @example
                         *
                         * var array = _.times(3, _.constant),
                         *     object = { 'a': array, 'b': array, 'c': array };
                         *
                         * _.map(['a[2]', 'c[0]'], _.methodOf(object));
                         * // => [2, 0]
                         *
                         * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
                         * // => [2, 0]
                         */
                        var methodOf = baseRest(function (object, args) {
                            return function (path) {
                                return baseInvoke(object, path, args);
                            };
                        });

                        /**
                         * Adds all own enumerable string keyed function properties of a source
                         * object to the destination object. If `object` is a function, then methods
                         * are added to its prototype as well.
                         *
                         * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
                         * avoid conflicts caused by modifying the original.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Util
                         * @param {Function|Object} [object=lodash] The destination object.
                         * @param {Object} source The object of functions to add.
                         * @param {Object} [options={}] The options object.
                         * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
                         * @returns {Function|Object} Returns `object`.
                         * @example
                         *
                         * function vowels(string) {
                         *   return _.filter(string, function(v) {
                         *     return /[aeiou]/i.test(v);
                         *   });
                         * }
                         *
                         * _.mixin({ 'vowels': vowels });
                         * _.vowels('fred');
                         * // => ['e']
                         *
                         * _('fred').vowels().value();
                         * // => ['e']
                         *
                         * _.mixin({ 'vowels': vowels }, { 'chain': false });
                         * _('fred').vowels();
                         * // => ['e']
                         */
                        function mixin(object, source, options) {
                            var props = keys(source),
                                methodNames = baseFunctions(source, props);

                            if (options == null &&
                                !(isObject(source) && (methodNames.length || !props.length))) {
                                options = source;
                                source = object;
                                object = this;
                                methodNames = baseFunctions(source, keys(source));
                            }
                            var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
                                isFunc = isFunction(object);

                            arrayEach(methodNames, function (methodName) {
                                var func = source[methodName];
                                object[methodName] = func;
                                if (isFunc) {
                                    object.prototype[methodName] = function () {
                                        var chainAll = this.__chain__;
                                        if (chain || chainAll) {
                                            var result = object(this.__wrapped__),
                                                actions = result.__actions__ = copyArray(this.__actions__);

                                            actions.push({'func': func, 'args': arguments, 'thisArg': object});
                                            result.__chain__ = chainAll;
                                            return result;
                                        }
                                        return func.apply(object, arrayPush([this.value()], arguments));
                                    };
                                }
                            });

                            return object;
                        }

                        /**
                         * Reverts the `_` variable to its previous value and returns a reference to
                         * the `lodash` function.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Util
                         * @returns {Function} Returns the `lodash` function.
                         * @example
                         *
                         * var lodash = _.noConflict();
                         */
                        function noConflict() {
                            if (root._ === this) {
                                root._ = oldDash;
                            }
                            return this;
                        }

                        /**
                         * This method returns `undefined`.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.3.0
                         * @category Util
                         * @example
                         *
                         * _.times(2, _.noop);
                         * // => [undefined, undefined]
                         */
                        function noop() {
                            // No operation performed.
                        }

                        /**
                         * Creates a function that gets the argument at index `n`. If `n` is negative,
                         * the nth argument from the end is returned.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Util
                         * @param {number} [n=0] The index of the argument to return.
                         * @returns {Function} Returns the new pass-thru function.
                         * @example
                         *
                         * var func = _.nthArg(1);
                         * func('a', 'b', 'c', 'd');
                         * // => 'b'
                         *
                         * var func = _.nthArg(-2);
                         * func('a', 'b', 'c', 'd');
                         * // => 'c'
                         */
                        function nthArg(n) {
                            n = toInteger(n);
                            return baseRest(function (args) {
                                return baseNth(args, n);
                            });
                        }

                        /**
                         * Creates a function that invokes `iteratees` with the arguments it receives
                         * and returns their results.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Util
                         * @param {...(Function|Function[])} [iteratees=[_.identity]]
                         *  The iteratees to invoke.
                         * @returns {Function} Returns the new function.
                         * @example
                         *
                         * var func = _.over([Math.max, Math.min]);
                         *
                         * func(1, 2, 3, 4);
                         * // => [4, 1]
                         */
                        var over = createOver(arrayMap);

                        /**
                         * Creates a function that checks if **all** of the `predicates` return
                         * truthy when invoked with the arguments it receives.
                         *
                         * Following shorthands are possible for providing predicates.
                         * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
                         * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Util
                         * @param {...(Function|Function[])} [predicates=[_.identity]]
                         *  The predicates to check.
                         * @returns {Function} Returns the new function.
                         * @example
                         *
                         * var func = _.overEvery([Boolean, isFinite]);
                         *
                         * func('1');
                         * // => true
                         *
                         * func(null);
                         * // => false
                         *
                         * func(NaN);
                         * // => false
                         */
                        var overEvery = createOver(arrayEvery);

                        /**
                         * Creates a function that checks if **any** of the `predicates` return
                         * truthy when invoked with the arguments it receives.
                         *
                         * Following shorthands are possible for providing predicates.
                         * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
                         * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Util
                         * @param {...(Function|Function[])} [predicates=[_.identity]]
                         *  The predicates to check.
                         * @returns {Function} Returns the new function.
                         * @example
                         *
                         * var func = _.overSome([Boolean, isFinite]);
                         *
                         * func('1');
                         * // => true
                         *
                         * func(null);
                         * // => true
                         *
                         * func(NaN);
                         * // => false
                         *
                         * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])
                         * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])
                         */
                        var overSome = createOver(arraySome);

                        /**
                         * Creates a function that returns the value at `path` of a given object.
                         *
                         * @static
                         * @memberOf _
                         * @since 2.4.0
                         * @category Util
                         * @param {Array|string} path The path of the property to get.
                         * @returns {Function} Returns the new accessor function.
                         * @example
                         *
                         * var objects = [
                         *   { 'a': { 'b': 2 } },
                         *   { 'a': { 'b': 1 } }
                         * ];
                         *
                         * _.map(objects, _.property('a.b'));
                         * // => [2, 1]
                         *
                         * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
                         * // => [1, 2]
                         */
                        function property(path) {
                            return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
                        }

                        /**
                         * The opposite of `_.property`; this method creates a function that returns
                         * the value at a given path of `object`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.0.0
                         * @category Util
                         * @param {Object} object The object to query.
                         * @returns {Function} Returns the new accessor function.
                         * @example
                         *
                         * var array = [0, 1, 2],
                         *     object = { 'a': array, 'b': array, 'c': array };
                         *
                         * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
                         * // => [2, 0]
                         *
                         * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
                         * // => [2, 0]
                         */
                        function propertyOf(object) {
                            return function (path) {
                                return object == null ? undefined : baseGet(object, path);
                            };
                        }

                        /**
                         * Creates an array of numbers (positive and/or negative) progressing from
                         * `start` up to, but not including, `end`. A step of `-1` is used if a negative
                         * `start` is specified without an `end` or `step`. If `end` is not specified,
                         * it's set to `start` with `start` then set to `0`.
                         *
                         * **Note:** JavaScript follows the IEEE-754 standard for resolving
                         * floating-point values which can produce unexpected results.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Util
                         * @param {number} [start=0] The start of the range.
                         * @param {number} end The end of the range.
                         * @param {number} [step=1] The value to increment or decrement by.
                         * @returns {Array} Returns the range of numbers.
                         * @see _.inRange, _.rangeRight
                         * @example
                         *
                         * _.range(4);
                         * // => [0, 1, 2, 3]
                         *
                         * _.range(-4);
                         * // => [0, -1, -2, -3]
                         *
                         * _.range(1, 5);
                         * // => [1, 2, 3, 4]
                         *
                         * _.range(0, 20, 5);
                         * // => [0, 5, 10, 15]
                         *
                         * _.range(0, -4, -1);
                         * // => [0, -1, -2, -3]
                         *
                         * _.range(1, 4, 0);
                         * // => [1, 1, 1]
                         *
                         * _.range(0);
                         * // => []
                         */
                        var range = createRange();

                        /**
                         * This method is like `_.range` except that it populates values in
                         * descending order.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Util
                         * @param {number} [start=0] The start of the range.
                         * @param {number} end The end of the range.
                         * @param {number} [step=1] The value to increment or decrement by.
                         * @returns {Array} Returns the range of numbers.
                         * @see _.inRange, _.range
                         * @example
                         *
                         * _.rangeRight(4);
                         * // => [3, 2, 1, 0]
                         *
                         * _.rangeRight(-4);
                         * // => [-3, -2, -1, 0]
                         *
                         * _.rangeRight(1, 5);
                         * // => [4, 3, 2, 1]
                         *
                         * _.rangeRight(0, 20, 5);
                         * // => [15, 10, 5, 0]
                         *
                         * _.rangeRight(0, -4, -1);
                         * // => [-3, -2, -1, 0]
                         *
                         * _.rangeRight(1, 4, 0);
                         * // => [1, 1, 1]
                         *
                         * _.rangeRight(0);
                         * // => []
                         */
                        var rangeRight = createRange(true);

                        /**
                         * This method returns a new empty array.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.13.0
                         * @category Util
                         * @returns {Array} Returns the new empty array.
                         * @example
                         *
                         * var arrays = _.times(2, _.stubArray);
                         *
                         * console.log(arrays);
                         * // => [[], []]
                         *
                         * console.log(arrays[0] === arrays[1]);
                         * // => false
                         */
                        function stubArray() {
                            return [];
                        }

                        /**
                         * This method returns `false`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.13.0
                         * @category Util
                         * @returns {boolean} Returns `false`.
                         * @example
                         *
                         * _.times(2, _.stubFalse);
                         * // => [false, false]
                         */
                        function stubFalse() {
                            return false;
                        }

                        /**
                         * This method returns a new empty object.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.13.0
                         * @category Util
                         * @returns {Object} Returns the new empty object.
                         * @example
                         *
                         * var objects = _.times(2, _.stubObject);
                         *
                         * console.log(objects);
                         * // => [{}, {}]
                         *
                         * console.log(objects[0] === objects[1]);
                         * // => false
                         */
                        function stubObject() {
                            return {};
                        }

                        /**
                         * This method returns an empty string.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.13.0
                         * @category Util
                         * @returns {string} Returns the empty string.
                         * @example
                         *
                         * _.times(2, _.stubString);
                         * // => ['', '']
                         */
                        function stubString() {
                            return '';
                        }

                        /**
                         * This method returns `true`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.13.0
                         * @category Util
                         * @returns {boolean} Returns `true`.
                         * @example
                         *
                         * _.times(2, _.stubTrue);
                         * // => [true, true]
                         */
                        function stubTrue() {
                            return true;
                        }

                        /**
                         * Invokes the iteratee `n` times, returning an array of the results of
                         * each invocation. The iteratee is invoked with one argument; (index).
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Util
                         * @param {number} n The number of times to invoke `iteratee`.
                         * @param {Function} [iteratee=_.identity] The function invoked per iteration.
                         * @returns {Array} Returns the array of results.
                         * @example
                         *
                         * _.times(3, String);
                         * // => ['0', '1', '2']
                         *
                         *  _.times(4, _.constant(0));
                         * // => [0, 0, 0, 0]
                         */
                        function times(n, iteratee) {
                            n = toInteger(n);
                            if (n < 1 || n > MAX_SAFE_INTEGER) {
                                return [];
                            }
                            var index = MAX_ARRAY_LENGTH,
                                length = nativeMin(n, MAX_ARRAY_LENGTH);

                            iteratee = getIteratee(iteratee);
                            n -= MAX_ARRAY_LENGTH;

                            var result = baseTimes(length, iteratee);
                            while (++index < n) {
                                iteratee(index);
                            }
                            return result;
                        }

                        /**
                         * Converts `value` to a property path array.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Util
                         * @param {*} value The value to convert.
                         * @returns {Array} Returns the new property path array.
                         * @example
                         *
                         * _.toPath('a.b.c');
                         * // => ['a', 'b', 'c']
                         *
                         * _.toPath('a[0].b.c');
                         * // => ['a', '0', 'b', 'c']
                         */
                        function toPath(value) {
                            if (isArray(value)) {
                                return arrayMap(value, toKey);
                            }
                            return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
                        }

                        /**
                         * Generates a unique ID. If `prefix` is given, the ID is appended to it.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Util
                         * @param {string} [prefix=''] The value to prefix the ID with.
                         * @returns {string} Returns the unique ID.
                         * @example
                         *
                         * _.uniqueId('contact_');
                         * // => 'contact_104'
                         *
                         * _.uniqueId();
                         * // => '105'
                         */
                        function uniqueId(prefix) {
                            var id = ++idCounter;
                            return toString(prefix) + id;
                        }

                        /*------------------------------------------------------------------------*/

                        /**
                         * Adds two numbers.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.4.0
                         * @category Math
                         * @param {number} augend The first number in an addition.
                         * @param {number} addend The second number in an addition.
                         * @returns {number} Returns the total.
                         * @example
                         *
                         * _.add(6, 4);
                         * // => 10
                         */
                        var add = createMathOperation(function (augend, addend) {
                            return augend + addend;
                        }, 0);

                        /**
                         * Computes `number` rounded up to `precision`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.10.0
                         * @category Math
                         * @param {number} number The number to round up.
                         * @param {number} [precision=0] The precision to round up to.
                         * @returns {number} Returns the rounded up number.
                         * @example
                         *
                         * _.ceil(4.006);
                         * // => 5
                         *
                         * _.ceil(6.004, 2);
                         * // => 6.01
                         *
                         * _.ceil(6040, -2);
                         * // => 6100
                         */
                        var ceil = createRound('ceil');

                        /**
                         * Divide two numbers.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.7.0
                         * @category Math
                         * @param {number} dividend The first number in a division.
                         * @param {number} divisor The second number in a division.
                         * @returns {number} Returns the quotient.
                         * @example
                         *
                         * _.divide(6, 4);
                         * // => 1.5
                         */
                        var divide = createMathOperation(function (dividend, divisor) {
                            return dividend / divisor;
                        }, 1);

                        /**
                         * Computes `number` rounded down to `precision`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.10.0
                         * @category Math
                         * @param {number} number The number to round down.
                         * @param {number} [precision=0] The precision to round down to.
                         * @returns {number} Returns the rounded down number.
                         * @example
                         *
                         * _.floor(4.006);
                         * // => 4
                         *
                         * _.floor(0.046, 2);
                         * // => 0.04
                         *
                         * _.floor(4060, -2);
                         * // => 4000
                         */
                        var floor = createRound('floor');

                        /**
                         * Computes the maximum value of `array`. If `array` is empty or falsey,
                         * `undefined` is returned.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Math
                         * @param {Array} array The array to iterate over.
                         * @returns {*} Returns the maximum value.
                         * @example
                         *
                         * _.max([4, 2, 8, 6]);
                         * // => 8
                         *
                         * _.max([]);
                         * // => undefined
                         */
                        function max(array) {
                            return (array && array.length)
                                ? baseExtremum(array, identity, baseGt)
                                : undefined;
                        }

                        /**
                         * This method is like `_.max` except that it accepts `iteratee` which is
                         * invoked for each element in `array` to generate the criterion by which
                         * the value is ranked. The iteratee is invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Math
                         * @param {Array} array The array to iterate over.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {*} Returns the maximum value.
                         * @example
                         *
                         * var objects = [{ 'n': 1 }, { 'n': 2 }];
                         *
                         * _.maxBy(objects, function(o) { return o.n; });
                         * // => { 'n': 2 }
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.maxBy(objects, 'n');
                         * // => { 'n': 2 }
                         */
                        function maxBy(array, iteratee) {
                            return (array && array.length)
                                ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)
                                : undefined;
                        }

                        /**
                         * Computes the mean of the values in `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Math
                         * @param {Array} array The array to iterate over.
                         * @returns {number} Returns the mean.
                         * @example
                         *
                         * _.mean([4, 2, 8, 6]);
                         * // => 5
                         */
                        function mean(array) {
                            return baseMean(array, identity);
                        }

                        /**
                         * This method is like `_.mean` except that it accepts `iteratee` which is
                         * invoked for each element in `array` to generate the value to be averaged.
                         * The iteratee is invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.7.0
                         * @category Math
                         * @param {Array} array The array to iterate over.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {number} Returns the mean.
                         * @example
                         *
                         * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
                         *
                         * _.meanBy(objects, function(o) { return o.n; });
                         * // => 5
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.meanBy(objects, 'n');
                         * // => 5
                         */
                        function meanBy(array, iteratee) {
                            return baseMean(array, getIteratee(iteratee, 2));
                        }

                        /**
                         * Computes the minimum value of `array`. If `array` is empty or falsey,
                         * `undefined` is returned.
                         *
                         * @static
                         * @since 0.1.0
                         * @memberOf _
                         * @category Math
                         * @param {Array} array The array to iterate over.
                         * @returns {*} Returns the minimum value.
                         * @example
                         *
                         * _.min([4, 2, 8, 6]);
                         * // => 2
                         *
                         * _.min([]);
                         * // => undefined
                         */
                        function min(array) {
                            return (array && array.length)
                                ? baseExtremum(array, identity, baseLt)
                                : undefined;
                        }

                        /**
                         * This method is like `_.min` except that it accepts `iteratee` which is
                         * invoked for each element in `array` to generate the criterion by which
                         * the value is ranked. The iteratee is invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Math
                         * @param {Array} array The array to iterate over.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {*} Returns the minimum value.
                         * @example
                         *
                         * var objects = [{ 'n': 1 }, { 'n': 2 }];
                         *
                         * _.minBy(objects, function(o) { return o.n; });
                         * // => { 'n': 1 }
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.minBy(objects, 'n');
                         * // => { 'n': 1 }
                         */
                        function minBy(array, iteratee) {
                            return (array && array.length)
                                ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)
                                : undefined;
                        }

                        /**
                         * Multiply two numbers.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.7.0
                         * @category Math
                         * @param {number} multiplier The first number in a multiplication.
                         * @param {number} multiplicand The second number in a multiplication.
                         * @returns {number} Returns the product.
                         * @example
                         *
                         * _.multiply(6, 4);
                         * // => 24
                         */
                        var multiply = createMathOperation(function (multiplier, multiplicand) {
                            return multiplier * multiplicand;
                        }, 1);

                        /**
                         * Computes `number` rounded to `precision`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.10.0
                         * @category Math
                         * @param {number} number The number to round.
                         * @param {number} [precision=0] The precision to round to.
                         * @returns {number} Returns the rounded number.
                         * @example
                         *
                         * _.round(4.006);
                         * // => 4
                         *
                         * _.round(4.006, 2);
                         * // => 4.01
                         *
                         * _.round(4060, -2);
                         * // => 4100
                         */
                        var round = createRound('round');

                        /**
                         * Subtract two numbers.
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Math
                         * @param {number} minuend The first number in a subtraction.
                         * @param {number} subtrahend The second number in a subtraction.
                         * @returns {number} Returns the difference.
                         * @example
                         *
                         * _.subtract(6, 4);
                         * // => 2
                         */
                        var subtract = createMathOperation(function (minuend, subtrahend) {
                            return minuend - subtrahend;
                        }, 0);

                        /**
                         * Computes the sum of the values in `array`.
                         *
                         * @static
                         * @memberOf _
                         * @since 3.4.0
                         * @category Math
                         * @param {Array} array The array to iterate over.
                         * @returns {number} Returns the sum.
                         * @example
                         *
                         * _.sum([4, 2, 8, 6]);
                         * // => 20
                         */
                        function sum(array) {
                            return (array && array.length)
                                ? baseSum(array, identity)
                                : 0;
                        }

                        /**
                         * This method is like `_.sum` except that it accepts `iteratee` which is
                         * invoked for each element in `array` to generate the value to be summed.
                         * The iteratee is invoked with one argument: (value).
                         *
                         * @static
                         * @memberOf _
                         * @since 4.0.0
                         * @category Math
                         * @param {Array} array The array to iterate over.
                         * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
                         * @returns {number} Returns the sum.
                         * @example
                         *
                         * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
                         *
                         * _.sumBy(objects, function(o) { return o.n; });
                         * // => 20
                         *
                         * // The `_.property` iteratee shorthand.
                         * _.sumBy(objects, 'n');
                         * // => 20
                         */
                        function sumBy(array, iteratee) {
                            return (array && array.length)
                                ? baseSum(array, getIteratee(iteratee, 2))
                                : 0;
                        }

                        /*------------------------------------------------------------------------*/

                        // Add methods that return wrapped values in chain sequences.
                        lodash.after = after;
                        lodash.ary = ary;
                        lodash.assign = assign;
                        lodash.assignIn = assignIn;
                        lodash.assignInWith = assignInWith;
                        lodash.assignWith = assignWith;
                        lodash.at = at;
                        lodash.before = before;
                        lodash.bind = bind;
                        lodash.bindAll = bindAll;
                        lodash.bindKey = bindKey;
                        lodash.castArray = castArray;
                        lodash.chain = chain;
                        lodash.chunk = chunk;
                        lodash.compact = compact;
                        lodash.concat = concat;
                        lodash.cond = cond;
                        lodash.conforms = conforms;
                        lodash.constant = constant;
                        lodash.countBy = countBy;
                        lodash.create = create;
                        lodash.curry = curry;
                        lodash.curryRight = curryRight;
                        lodash.debounce = debounce;
                        lodash.defaults = defaults;
                        lodash.defaultsDeep = defaultsDeep;
                        lodash.defer = defer;
                        lodash.delay = delay;
                        lodash.difference = difference;
                        lodash.differenceBy = differenceBy;
                        lodash.differenceWith = differenceWith;
                        lodash.drop = drop;
                        lodash.dropRight = dropRight;
                        lodash.dropRightWhile = dropRightWhile;
                        lodash.dropWhile = dropWhile;
                        lodash.fill = fill;
                        lodash.filter = filter;
                        lodash.flatMap = flatMap;
                        lodash.flatMapDeep = flatMapDeep;
                        lodash.flatMapDepth = flatMapDepth;
                        lodash.flatten = flatten;
                        lodash.flattenDeep = flattenDeep;
                        lodash.flattenDepth = flattenDepth;
                        lodash.flip = flip;
                        lodash.flow = flow;
                        lodash.flowRight = flowRight;
                        lodash.fromPairs = fromPairs;
                        lodash.functions = functions;
                        lodash.functionsIn = functionsIn;
                        lodash.groupBy = groupBy;
                        lodash.initial = initial;
                        lodash.intersection = intersection;
                        lodash.intersectionBy = intersectionBy;
                        lodash.intersectionWith = intersectionWith;
                        lodash.invert = invert;
                        lodash.invertBy = invertBy;
                        lodash.invokeMap = invokeMap;
                        lodash.iteratee = iteratee;
                        lodash.keyBy = keyBy;
                        lodash.keys = keys;
                        lodash.keysIn = keysIn;
                        lodash.map = map;
                        lodash.mapKeys = mapKeys;
                        lodash.mapValues = mapValues;
                        lodash.matches = matches;
                        lodash.matchesProperty = matchesProperty;
                        lodash.memoize = memoize;
                        lodash.merge = merge;
                        lodash.mergeWith = mergeWith;
                        lodash.method = method;
                        lodash.methodOf = methodOf;
                        lodash.mixin = mixin;
                        lodash.negate = negate;
                        lodash.nthArg = nthArg;
                        lodash.omit = omit;
                        lodash.omitBy = omitBy;
                        lodash.once = once;
                        lodash.orderBy = orderBy;
                        lodash.over = over;
                        lodash.overArgs = overArgs;
                        lodash.overEvery = overEvery;
                        lodash.overSome = overSome;
                        lodash.partial = partial;
                        lodash.partialRight = partialRight;
                        lodash.partition = partition;
                        lodash.pick = pick;
                        lodash.pickBy = pickBy;
                        lodash.property = property;
                        lodash.propertyOf = propertyOf;
                        lodash.pull = pull;
                        lodash.pullAll = pullAll;
                        lodash.pullAllBy = pullAllBy;
                        lodash.pullAllWith = pullAllWith;
                        lodash.pullAt = pullAt;
                        lodash.range = range;
                        lodash.rangeRight = rangeRight;
                        lodash.rearg = rearg;
                        lodash.reject = reject;
                        lodash.remove = remove;
                        lodash.rest = rest;
                        lodash.reverse = reverse;
                        lodash.sampleSize = sampleSize;
                        lodash.set = set;
                        lodash.setWith = setWith;
                        lodash.shuffle = shuffle;
                        lodash.slice = slice;
                        lodash.sortBy = sortBy;
                        lodash.sortedUniq = sortedUniq;
                        lodash.sortedUniqBy = sortedUniqBy;
                        lodash.split = split;
                        lodash.spread = spread;
                        lodash.tail = tail;
                        lodash.take = take;
                        lodash.takeRight = takeRight;
                        lodash.takeRightWhile = takeRightWhile;
                        lodash.takeWhile = takeWhile;
                        lodash.tap = tap;
                        lodash.throttle = throttle;
                        lodash.thru = thru;
                        lodash.toArray = toArray;
                        lodash.toPairs = toPairs;
                        lodash.toPairsIn = toPairsIn;
                        lodash.toPath = toPath;
                        lodash.toPlainObject = toPlainObject;
                        lodash.transform = transform;
                        lodash.unary = unary;
                        lodash.union = union;
                        lodash.unionBy = unionBy;
                        lodash.unionWith = unionWith;
                        lodash.uniq = uniq;
                        lodash.uniqBy = uniqBy;
                        lodash.uniqWith = uniqWith;
                        lodash.unset = unset;
                        lodash.unzip = unzip;
                        lodash.unzipWith = unzipWith;
                        lodash.update = update;
                        lodash.updateWith = updateWith;
                        lodash.values = values;
                        lodash.valuesIn = valuesIn;
                        lodash.without = without;
                        lodash.words = words;
                        lodash.wrap = wrap;
                        lodash.xor = xor;
                        lodash.xorBy = xorBy;
                        lodash.xorWith = xorWith;
                        lodash.zip = zip;
                        lodash.zipObject = zipObject;
                        lodash.zipObjectDeep = zipObjectDeep;
                        lodash.zipWith = zipWith;

                        // Add aliases.
                        lodash.entries = toPairs;
                        lodash.entriesIn = toPairsIn;
                        lodash.extend = assignIn;
                        lodash.extendWith = assignInWith;

                        // Add methods to `lodash.prototype`.
                        mixin(lodash, lodash);

                        /*------------------------------------------------------------------------*/

                        // Add methods that return unwrapped values in chain sequences.
                        lodash.add = add;
                        lodash.attempt = attempt;
                        lodash.camelCase = camelCase;
                        lodash.capitalize = capitalize;
                        lodash.ceil = ceil;
                        lodash.clamp = clamp;
                        lodash.clone = clone;
                        lodash.cloneDeep = cloneDeep;
                        lodash.cloneDeepWith = cloneDeepWith;
                        lodash.cloneWith = cloneWith;
                        lodash.conformsTo = conformsTo;
                        lodash.deburr = deburr;
                        lodash.defaultTo = defaultTo;
                        lodash.divide = divide;
                        lodash.endsWith = endsWith;
                        lodash.eq = eq;
                        lodash.escape = escape;
                        lodash.escapeRegExp = escapeRegExp;
                        lodash.every = every;
                        lodash.find = find;
                        lodash.findIndex = findIndex;
                        lodash.findKey = findKey;
                        lodash.findLast = findLast;
                        lodash.findLastIndex = findLastIndex;
                        lodash.findLastKey = findLastKey;
                        lodash.floor = floor;
                        lodash.forEach = forEach;
                        lodash.forEachRight = forEachRight;
                        lodash.forIn = forIn;
                        lodash.forInRight = forInRight;
                        lodash.forOwn = forOwn;
                        lodash.forOwnRight = forOwnRight;
                        lodash.get = get;
                        lodash.gt = gt;
                        lodash.gte = gte;
                        lodash.has = has;
                        lodash.hasIn = hasIn;
                        lodash.head = head;
                        lodash.identity = identity;
                        lodash.includes = includes;
                        lodash.indexOf = indexOf;
                        lodash.inRange = inRange;
                        lodash.invoke = invoke;
                        lodash.isArguments = isArguments;
                        lodash.isArray = isArray;
                        lodash.isArrayBuffer = isArrayBuffer;
                        lodash.isArrayLike = isArrayLike;
                        lodash.isArrayLikeObject = isArrayLikeObject;
                        lodash.isBoolean = isBoolean;
                        lodash.isBuffer = isBuffer;
                        lodash.isDate = isDate;
                        lodash.isElement = isElement;
                        lodash.isEmpty = isEmpty;
                        lodash.isEqual = isEqual;
                        lodash.isEqualWith = isEqualWith;
                        lodash.isError = isError;
                        lodash.isFinite = isFinite;
                        lodash.isFunction = isFunction;
                        lodash.isInteger = isInteger;
                        lodash.isLength = isLength;
                        lodash.isMap = isMap;
                        lodash.isMatch = isMatch;
                        lodash.isMatchWith = isMatchWith;
                        lodash.isNaN = isNaN;
                        lodash.isNative = isNative;
                        lodash.isNil = isNil;
                        lodash.isNull = isNull;
                        lodash.isNumber = isNumber;
                        lodash.isObject = isObject;
                        lodash.isObjectLike = isObjectLike;
                        lodash.isPlainObject = isPlainObject;
                        lodash.isRegExp = isRegExp;
                        lodash.isSafeInteger = isSafeInteger;
                        lodash.isSet = isSet;
                        lodash.isString = isString;
                        lodash.isSymbol = isSymbol;
                        lodash.isTypedArray = isTypedArray;
                        lodash.isUndefined = isUndefined;
                        lodash.isWeakMap = isWeakMap;
                        lodash.isWeakSet = isWeakSet;
                        lodash.join = join;
                        lodash.kebabCase = kebabCase;
                        lodash.last = last;
                        lodash.lastIndexOf = lastIndexOf;
                        lodash.lowerCase = lowerCase;
                        lodash.lowerFirst = lowerFirst;
                        lodash.lt = lt;
                        lodash.lte = lte;
                        lodash.max = max;
                        lodash.maxBy = maxBy;
                        lodash.mean = mean;
                        lodash.meanBy = meanBy;
                        lodash.min = min;
                        lodash.minBy = minBy;
                        lodash.stubArray = stubArray;
                        lodash.stubFalse = stubFalse;
                        lodash.stubObject = stubObject;
                        lodash.stubString = stubString;
                        lodash.stubTrue = stubTrue;
                        lodash.multiply = multiply;
                        lodash.nth = nth;
                        lodash.noConflict = noConflict;
                        lodash.noop = noop;
                        lodash.now = now;
                        lodash.pad = pad;
                        lodash.padEnd = padEnd;
                        lodash.padStart = padStart;
                        lodash.parseInt = parseInt;
                        lodash.random = random;
                        lodash.reduce = reduce;
                        lodash.reduceRight = reduceRight;
                        lodash.repeat = repeat;
                        lodash.replace = replace;
                        lodash.result = result;
                        lodash.round = round;
                        lodash.runInContext = runInContext;
                        lodash.sample = sample;
                        lodash.size = size;
                        lodash.snakeCase = snakeCase;
                        lodash.some = some;
                        lodash.sortedIndex = sortedIndex;
                        lodash.sortedIndexBy = sortedIndexBy;
                        lodash.sortedIndexOf = sortedIndexOf;
                        lodash.sortedLastIndex = sortedLastIndex;
                        lodash.sortedLastIndexBy = sortedLastIndexBy;
                        lodash.sortedLastIndexOf = sortedLastIndexOf;
                        lodash.startCase = startCase;
                        lodash.startsWith = startsWith;
                        lodash.subtract = subtract;
                        lodash.sum = sum;
                        lodash.sumBy = sumBy;
                        lodash.template = template;
                        lodash.times = times;
                        lodash.toFinite = toFinite;
                        lodash.toInteger = toInteger;
                        lodash.toLength = toLength;
                        lodash.toLower = toLower;
                        lodash.toNumber = toNumber;
                        lodash.toSafeInteger = toSafeInteger;
                        lodash.toString = toString;
                        lodash.toUpper = toUpper;
                        lodash.trim = trim;
                        lodash.trimEnd = trimEnd;
                        lodash.trimStart = trimStart;
                        lodash.truncate = truncate;
                        lodash.unescape = unescape;
                        lodash.uniqueId = uniqueId;
                        lodash.upperCase = upperCase;
                        lodash.upperFirst = upperFirst;

                        // Add aliases.
                        lodash.each = forEach;
                        lodash.eachRight = forEachRight;
                        lodash.first = head;

                        mixin(lodash, (function () {
                            var source = {};
                            baseForOwn(lodash, function (func, methodName) {
                                if (!hasOwnProperty.call(lodash.prototype, methodName)) {
                                    source[methodName] = func;
                                }
                            });
                            return source;
                        }()), {'chain': false});

                        /*------------------------------------------------------------------------*/

                        /**
                         * The semantic version number.
                         *
                         * @static
                         * @memberOf _
                         * @type {string}
                         */
                        lodash.VERSION = VERSION;

                        // Assign default placeholders.
                        arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function (methodName) {
                            lodash[methodName].placeholder = lodash;
                        });

                        // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
                        arrayEach(['drop', 'take'], function (methodName, index) {
                            LazyWrapper.prototype[methodName] = function (n) {
                                n = n === undefined ? 1 : nativeMax(toInteger(n), 0);

                                var result = (this.__filtered__ && !index)
                                    ? new LazyWrapper(this)
                                    : this.clone();

                                if (result.__filtered__) {
                                    result.__takeCount__ = nativeMin(n, result.__takeCount__);
                                } else {
                                    result.__views__.push({
                                        'size': nativeMin(n, MAX_ARRAY_LENGTH),
                                        'type': methodName + (result.__dir__ < 0 ? 'Right' : '')
                                    });
                                }
                                return result;
                            };

                            LazyWrapper.prototype[methodName + 'Right'] = function (n) {
                                return this.reverse()[methodName](n).reverse();
                            };
                        });

                        // Add `LazyWrapper` methods that accept an `iteratee` value.
                        arrayEach(['filter', 'map', 'takeWhile'], function (methodName, index) {
                            var type = index + 1,
                                isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;

                            LazyWrapper.prototype[methodName] = function (iteratee) {
                                var result = this.clone();
                                result.__iteratees__.push({
                                    'iteratee': getIteratee(iteratee, 3),
                                    'type': type
                                });
                                result.__filtered__ = result.__filtered__ || isFilter;
                                return result;
                            };
                        });

                        // Add `LazyWrapper` methods for `_.head` and `_.last`.
                        arrayEach(['head', 'last'], function (methodName, index) {
                            var takeName = 'take' + (index ? 'Right' : '');

                            LazyWrapper.prototype[methodName] = function () {
                                return this[takeName](1).value()[0];
                            };
                        });

                        // Add `LazyWrapper` methods for `_.initial` and `_.tail`.
                        arrayEach(['initial', 'tail'], function (methodName, index) {
                            var dropName = 'drop' + (index ? '' : 'Right');

                            LazyWrapper.prototype[methodName] = function () {
                                return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
                            };
                        });

                        LazyWrapper.prototype.compact = function () {
                            return this.filter(identity);
                        };

                        LazyWrapper.prototype.find = function (predicate) {
                            return this.filter(predicate).head();
                        };

                        LazyWrapper.prototype.findLast = function (predicate) {
                            return this.reverse().find(predicate);
                        };

                        LazyWrapper.prototype.invokeMap = baseRest(function (path, args) {
                            if (typeof path == 'function') {
                                return new LazyWrapper(this);
                            }
                            return this.map(function (value) {
                                return baseInvoke(value, path, args);
                            });
                        });

                        LazyWrapper.prototype.reject = function (predicate) {
                            return this.filter(negate(getIteratee(predicate)));
                        };

                        LazyWrapper.prototype.slice = function (start, end) {
                            start = toInteger(start);

                            var result = this;
                            if (result.__filtered__ && (start > 0 || end < 0)) {
                                return new LazyWrapper(result);
                            }
                            if (start < 0) {
                                result = result.takeRight(-start);
                            } else if (start) {
                                result = result.drop(start);
                            }
                            if (end !== undefined) {
                                end = toInteger(end);
                                result = end < 0 ? result.dropRight(-end) : result.take(end - start);
                            }
                            return result;
                        };

                        LazyWrapper.prototype.takeRightWhile = function (predicate) {
                            return this.reverse().takeWhile(predicate).reverse();
                        };

                        LazyWrapper.prototype.toArray = function () {
                            return this.take(MAX_ARRAY_LENGTH);
                        };

                        // Add `LazyWrapper` methods to `lodash.prototype`.
                        baseForOwn(LazyWrapper.prototype, function (func, methodName) {
                            var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
                                isTaker = /^(?:head|last)$/.test(methodName),
                                lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],
                                retUnwrapped = isTaker || /^find/.test(methodName);

                            if (!lodashFunc) {
                                return;
                            }
                            lodash.prototype[methodName] = function () {
                                var value = this.__wrapped__,
                                    args = isTaker ? [1] : arguments,
                                    isLazy = value instanceof LazyWrapper,
                                    iteratee = args[0],
                                    useLazy = isLazy || isArray(value);

                                var interceptor = function (value) {
                                    var result = lodashFunc.apply(lodash, arrayPush([value], args));
                                    return (isTaker && chainAll) ? result[0] : result;
                                };

                                if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
                                    // Avoid lazy use if the iteratee has a "length" value other than `1`.
                                    isLazy = useLazy = false;
                                }
                                var chainAll = this.__chain__,
                                    isHybrid = !!this.__actions__.length,
                                    isUnwrapped = retUnwrapped && !chainAll,
                                    onlyLazy = isLazy && !isHybrid;

                                if (!retUnwrapped && useLazy) {
                                    value = onlyLazy ? value : new LazyWrapper(this);
                                    var result = func.apply(value, args);
                                    result.__actions__.push({
                                        'func': thru,
                                        'args': [interceptor],
                                        'thisArg': undefined
                                    });
                                    return new LodashWrapper(result, chainAll);
                                }
                                if (isUnwrapped && onlyLazy) {
                                    return func.apply(this, args);
                                }
                                result = this.thru(interceptor);
                                return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;
                            };
                        });

                        // Add `Array` methods to `lodash.prototype`.
                        arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function (methodName) {
                            var func = arrayProto[methodName],
                                chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
                                retUnwrapped = /^(?:pop|shift)$/.test(methodName);

                            lodash.prototype[methodName] = function () {
                                var args = arguments;
                                if (retUnwrapped && !this.__chain__) {
                                    var value = this.value();
                                    return func.apply(isArray(value) ? value : [], args);
                                }
                                return this[chainName](function (value) {
                                    return func.apply(isArray(value) ? value : [], args);
                                });
                            };
                        });

                        // Map minified method names to their real names.
                        baseForOwn(LazyWrapper.prototype, function (func, methodName) {
                            var lodashFunc = lodash[methodName];
                            if (lodashFunc) {
                                var key = lodashFunc.name + '';
                                if (!hasOwnProperty.call(realNames, key)) {
                                    realNames[key] = [];
                                }
                                realNames[key].push({'name': methodName, 'func': lodashFunc});
                            }
                        });

                        realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{
                            'name': 'wrapper',
                            'func': undefined
                        }];

                        // Add methods to `LazyWrapper`.
                        LazyWrapper.prototype.clone = lazyClone;
                        LazyWrapper.prototype.reverse = lazyReverse;
                        LazyWrapper.prototype.value = lazyValue;

                        // Add chain sequence methods to the `lodash` wrapper.
                        lodash.prototype.at = wrapperAt;
                        lodash.prototype.chain = wrapperChain;
                        lodash.prototype.commit = wrapperCommit;
                        lodash.prototype.next = wrapperNext;
                        lodash.prototype.plant = wrapperPlant;
                        lodash.prototype.reverse = wrapperReverse;
                        lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;

                        // Add lazy aliases.
                        lodash.prototype.first = lodash.prototype.head;

                        if (symIterator) {
                            lodash.prototype[symIterator] = wrapperToIterator;
                        }
                        return lodash;
                    });

                    /*--------------------------------------------------------------------------*/

                    // Export lodash.
                    var _ = runInContext();

                    // Some AMD build optimizers, like r.js, check for condition patterns like:
                    if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
                        // Expose Lodash on the global object to prevent errors when Lodash is
                        // loaded by a script tag in the presence of an AMD loader.
                        // See http://requirejs.org/docs/errors.html#mismatch for more details.
                        // Use `_.noConflict` to remove Lodash from the global object.
                        root._ = _;

                        // Define as an anonymous module so, through path mapping, it can be
                        // referenced as the "underscore" module.
                        define(function () {
                            return _;
                        });
                    }
                    // Check for `exports` after `define` in case a build optimizer adds it.
                    else if (freeModule) {
                        // Export for Node.js.
                        (freeModule.exports = _)._ = _;
                        // Export for CommonJS support.
                        freeExports._ = _;
                    } else {
                        // Export to the global object.
                        root._ = _;
                    }
                }.call(this));

            }).call(this)
        }).call(this, typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
    }, {}],
    3: [function (require, module, exports) {
        const _ = require('lodash');

        try {
            // Node js will throw an error
            this === window;

            const Clipboard = require('clipboard');
            new Clipboard('.markdown-it-code-copy');
        } catch (_err) {
        }

        const defaultOptions = {
            iconStyle: 'font-size: 21px; opacity: 0.4;',
            iconClass: 'mdi mdi-content-copy',
            buttonStyle: 'position: absolute; top: 7.5px; right: 6px; cursor: pointer; outline: none;',
            buttonClass: ''
        };

        function renderCode(origRule, options) {
            options = _.merge(defaultOptions, options);
            return (...args) => {
                const [tokens, idx] = args;
                const content = tokens[idx].content
                    .replaceAll('"', '&quot;')
                    .replaceAll("'", "&lt;");
                const origRendered = origRule(...args);

                if (content.length === 0)
                    return origRendered;

                return `
<div style="position: relative">
	${origRendered}
	<button class="markdown-it-code-copy ${options.buttonClass}" data-clipboard-text="${content}" style="${options.buttonStyle}" title="Copy">
		<span style="${options.iconStyle}" class="${options.iconClass}"></span>
	</button>
</div>
`;
            };
        }

        module.exports = (md, options) => {
            md.renderer.rules.code_block = renderCode(md.renderer.rules.code_block, options);
            md.renderer.rules.fence = renderCode(md.renderer.rules.fence, options);
        };

    }, {"clipboard": 1, "lodash": 2}],
    4: [function (require, module, exports) {
        let markdownItCodeCopy = require('markdown-it-code-copy')
        window.markdownItCodeCopy = markdownItCodeCopy
    }, {"markdown-it-code-copy": 3}]
}, {}, [4]);
